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17-4PH T-630 UNS S17400 17-4 Duplex Stainless Steel Tube Chromium Nickel Precipitation Age Hardening Martensitic

Categories Duplex Stainless Steel Pipe
Brand Name: Best
Model Number: 1/4' -48''
Certification: API/CE/ ISO /
Place of Origin: China
MOQ: 1 Pcs
Price: 1200 usd/ton
Supply Ability: 10000 Ton/Moth
Delivery Time: 5-8 working days
Packaging Details: Regular shipping packaging or depends on customer's requirement
Standard: ALLOY 800 Duplex Satinless Steel SEAMLESS PIPE
Grade: ALLOY 800
Size: 14''
Place of origin: China
Material: 2205/2507
Production Year: 2018
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    17-4PH T-630 UNS S17400 17-4 Duplex Stainless Steel Tube Chromium Nickel Precipitation Age Hardening Martensitic

    Production Name :


    T-316 Pump Shaft Quality (PSQ)


    Stainless Steel
    17-4PH, T-630
    Characteristics
    − 17-4PH offers a unique combination of properties: high strength, excellent corrosion resistance, good fatigue strength, superior resistance to galling and seizing, easily heat treated by a short, simple low temperature treatment with minimal distortion and no scaling. Parts may be finish-machined before hardening. It has good fabrication characteristics and is easily weldable.
    − T-630 is usually supplied in Condition 'A', commonly called solution treated, but it should be noted that it can be as hard as HB363, and is frequently HB 321/341. Also the steel should never be put into service in Condition'A' - the structure is untempered martensite, with low ductility and poor resistance to stress cracking.
    − See the Data Section for machinability ratings of Condition A and Condition H1150.
    Typical Applications
    − Pump shafts, oil well valves, valve stems and bushings. Aircraft and missile fittings and components, marine propeller shafts and blades, pulp and paper mill equipment, orifice plates, chemical processing equipment, torsion bars, corrosion resistant gears.
    Corrosion and Heat Resistance
    − The corrosion resistance is comparable to T-302/304 in most environments - a wide variety of conditions in the petroleum, chemical, pulp and paper, dairy and food processing industries. May be used in service temperature up to 400°C.

    Stainless Steel T-416 Pump Shaft Quality (PSQ)
    Characteristics
    − T-416 is quite simply described as a free-machining modification of T- 410. The addition of phosphorus and sulphur is responsible for improved machinability, but results in some disadvantages such as lower impact values and poor weldability. However, the steel is designed for free- machining and it is the best of all the stainless steels. The rating is as high as 90% - 160 surface feet per minute.
    − T-416 is mainly supplied in the annealed condition; but it responds to conventional heat treatment and a wide range of mechanical properties may be obtained. It is magnetic in all conditions.
    Typical Applications
    − T-416 is used in all appIications demanding the mechanical properties and corrosion resistance of T-410 - plus the free machining. Pump shafts, pistons, valves, automatic screw machined parts, nuts, bolts, studs.
    Corrosion and Heat Resistance
    − Maximum resistance is obtained by hardened material, ground and polished. Excellent resistance to fresh water, mild alkalis and acids, dry atmospheres, neutral and basic salts. Fair resistance to scaling up to 675˚C in continuous service.
    Mechanical Properties
    − 100,000 psi minimum tensile strength
    − 85,000 psi minimum yield
    − 15% minimum elongation (in 2")
    − 45% minimum reduction of area (R/A)
    − 207-248 Brinell hardness
    Tolerances
    − Straightness Tolerance – 0.0015" per foot
    − Maximum out-of-round – 1/2 total diameter tol.
    − Diameter Tolerance:
    Size
    Tolerance
    .750"-.999"
    +0/- 0.0020"
    1.000"-1.4375"
    +0/- 0.0025"
    1.4376"-4.000"
    +0/- 0.0030"

    Heat Treatment to NACE MR0175
    − The UNS S17400 precipitation hardening stainless steel is acceptable in SSC service when heat treated to HRC 33 maximum by one of the following procedures:
    Procedure 1: Double age at 1150 F (620 C), NACE MR-01-75 (Alternate 1)
    − 1. Solution anneal at 1900° F (1040° C) and air cool, or suitable liquid quench, to below 90° F (32° C).
    − 2. Harden at 1150° F (620° C) for 4 hours at temperature (32° C) and cool in air.
    − 3. Cool material to below 90° F (32° C) before the second hours at temperature and cool in air to below precipitation hardening step.
    − 4. Harden at 1150° F (620° C) for 4 hours at temperature and cool in air.
    Procedure 2: Double age, NACE MR-01-75
    (Alternate 2)
    − 1. Solution anneal at 1900° F (1040° C) and air cool, or suitable liquid quench, to below 90F (32° C).
    − 2. Precipitation harden at 1400° F (760° C) for 2 hours at temperature and cool in air to below. 90° F (32° C) before second precipitation
    − 3. Precipitation harden at 1150° F (620° C) for 4 hours at temperature and cool in air.

    Characteristics
    − In simple terms, T-316 is a molybdenum bearing T-304; the addition of molybdenum greatly increases its corrosion resistance and its mechanical properties at elevated temperatures. This combination of corrosion resistance and high creep and tensile strength, plus good cold forming and drawing properties makesT-316 suitable for a very wide range of applications.
    − T-316L is a a low-carbon modification which minimizes carbide precipitation during welding and exposure to elevated temperatures in the 425˚C/815˚C range. lt can be used in the as-welded condition. T-316N has a higher nitrogen content than T-316 to increase strength with minimum effect on ductility and corrosion resistance.
    − T-316 is non-magnetic in the annealed condition and cannot be hardened by thermal treatment, but it does work harden. Machinability is approximately 42% - 70 surface feet per minute.
    Typical Applications
    − Widely used in the pulp and paper, chemical, petro-chemical, Fertilizer and pharmaceutical industries. Heat exchangers, marine applications, aircraft industry, fittings, architectural components. Pump Shafts.
    Corrosion and Heat Resistance
    − T-316 is more resistant to corrosive conditions than any of the more commonly used stainless grades (but see T-317). Very good resistance to the sulphur compounds used in pulp and paper processing. Good resistance to sulphuric, sulphurous and phosphoric acids and salts, also hydrogen sulphide; but poor resistance to hydrochloric and hydrofluoric acids. Excellent scale resistance at temperatures up to 900˚C in continuous service, and up to 850˚C for intermittent service.
    Mechanical Properties
    − 75,000 psi minimum tensile strength
    − 30,000 psi minimum yield
    − 35% minimum elongation (in 2")
    − 50% minimum reduction of area (R/A)

    Stainless Steel T-410, T-410S (UNS S41000, S41008)
    - 12% Chromium hardenable martensitic stainless steel.
    - Available in most forms - sheet and plate to A176 and A240; bars to A276, A479 and A193 Grade B6
    Stainless Steel T-416 (UNS S41600)
    - 12% Chromium Free-Machining Hardenable Stainless Steel.
    Available mainly in wire and bar sections to ASTM A581 and A582.
    Typical Analysis
    C
    Mn
    P
    S
    Cr
    Mo (opt.)
    .15 Max
    1.25 Max
    .06 Max
    .15 Max
    12/ 14
    .60 Max
    Characteristics
    − T-416 is quite simply described as a free-machining modification of T- 410. The addition of phosphorus and sulphur is responsible for improved machinability, but results in some disadvantages such as lower impact values and poor weldability. However, the steel is designed for free- machining and it is the best of all the stainless steels. The rating is as high as 90% - 160 surface feet per minute.
    − T-416 is mainly supplied in the annealed condition; but it responds to conventional heat treatment and a wide range of mechanical properties may be obtained. It is magnetic in all conditions.
    − T-416 is also available in Pump Shaft quality.
    Typical Applications
    − T-416 is used in all applications demanding the mechanical properties and corrosion resistance of T-410 - plus the free-machining. Pump shafts, pistons, valves, automatic screw machined parts, nuts, bolts, studs.
    Corrosion and Heat Resistance
    − Maximum resistance is obtained by hardened material, ground and polished. Excellent resistance to fresh water, mild alkalis and acids, dry atmospheres, neutral and basic salts. Fair resistance to scaling up to 675˚C in continuous service.
    Heat Treatment
    − Annealing - Heat to 850˚/900˚C for 30 minutes per inch of section thickness. Cool slowly in furnace.
    − Hardening - Heat to 950˚/1000˚C and quench large sections in oil. Small sections may be quenched in air.
    − Tempering - According to mechanical properties required, but the range of 400˚/580˚C is not recommended.
    Characteristics
    − T-410 is the basic chromium grade in the '400' series. It can be treated by conventional means to develop high strength properties with good ductility. In fact, it is in the heat treated condition that T-410 develops its maximum corrosion resistance, particularly when ground and polished. And when heat treated to HRC 18/22, with double tempering, per NACE MR01-75, resists corrosion in severe sour gas environments. Excellent for highly stressed parts needing moderate heat and corrosion resistance with high strength.
    − T-410S limits the carbon content to .08% max for better weldability,mainly in sheet and plate.
    − T-410 is magnetic in all conditions. It has better machining characteristics than the chromium-nickel grades and is rated at 54% - 90 surface feet per minute.
    Typical Applications
    − Machine parts, pump shafts, blast joints, blow-out preventers, pistons, valve parts, bolts, bushings, jet engine parts, rifle barrels, hardware, cutlery
    Corrosion and Heat Resistance
    − Resists atmospheric corrosion, mild alkalis and acids, food acids, rural and industrial atmospheres. Resists scaling at temperatures up to 675˚C in continuous service.
    Heat Treatment
    − Annealing - Heat to 850˚/900˚C for 30 min. per inch of section thickness and slow cool.
    − Hardening - Heat to 950˚/1000˚C and quench in oil, water or air according to section and properties required.
    − Tempering - According to properties required, but the range 400˚/580˚C should be avoided due to low impact values which result at these temperatures. Double tempered at 660˚/640˚C for SSC resistance.
    Stainless Steel T-316, T-316L, T-316N
    (UNS S31600, S31603, S31653)
    - 18-12-3 Chromium-Nickel-Molybdenum austenitic stainless steel.
    - Available in most forms & sheets, plates and coils to ASTM A240; bar sections to ASTM A276 & A479
    Characteristics
    − Essentially similar to T-316; but the increased chromium, nickel and molybdenum content results in better corrosion resistance, higher tensile strength and higher creep strength than T-316.
    − T-317L with .03% maximum carbon content is used to restrict carbide precipitation during welding and in applications where maximum corrosion resistance is required. In fact, for small quantities, T-317 is frequently available only as T-317L.
    − T-317 is non-magnetic in the annealed condition and is non-hardenable by heat treatment. Machinability is 39% - 65 surface feet per minute.
    Typical Applications
    − Pulp and paper, chemical and pharmaceutical processing equipment and machinery.
    Corrosion and Heat Resistance
    − Significantly better corrosion resistance that T-316 in the same environments. Good oxidation resistance in continuous service to 925˚C and in intermitent service to 879˚C.
    Characteristics
    − In simple terms, T-316 is a molybdenum bearing T-304; the addition of molybdenum greatly increases its corrosion resistance and its mechanical properties at elevated temperatures. This combination of corrosion resistance and high creep and tensile strength, plus good cold forming and drawing properties makes T-316 suitable for a very wide range of applications.
    − T-316L is a a low-carbon modification which minimizes carbide precipitation during welding and exposure to elevated temperatures in the 425˚C/815˚C range. It can be used in the as-welded condition. T-316N has a higher nitrogen content than T-316 to increase strength with minimum effect on ductility and corrosion resistance.
    − T-316 is non-magnetic in the annealed condition and cannot be hardened by thermal treatment, but it does work harden. Machinability is approximately 42% - 70 surface feet per minute.
    − T-316 is also available in Pump Shaft quality.
    Typical Applications
    − Widely used in the pulp and paper, chemical, petro-chemical, fertilizer and pharmaceutical industries. Heat exchangers, marine applications, aircraft industry, fittings, architectural components.
    Corrosion and Heat Resistance
    − T-316 is more resistant to corrosive conditions than any of the more commonly used stainless grades (but see T-317). Very good resistance to the sulphur compounds used in pulp and paper processing. Good resistance to sulphuric, sulphurous and phosphoric acids and salts, also hydrogen sulphide; but poor resistance to hydrocloric and hydrofluoric acids. Excellent scale resistance at temperatures up to 900˚C in continuous service and up to 850˚C for intermittent service.

    Stainless Steel T-304, T-304H, T-304L
    (UNS S30400, S30409, S30403)
    Stainless Steel
    T-310, T-310S
    Characteristics
    − These are austenitic chromium-nickel stainless steels with excellent oxidation resistance and capable of resisting temperatures up to 1150˚C in continuous service. They also provide good resistance to carburizing environments. T-310S is simply a low carbon modification which is to be preferred in welded construction.
    Typical Applications
    − Furnace parts, carburizing boxes, heat treating trays, oven linings, heat exchangers, gas turbine parts, jet engine rings.
    Corrosion and Heat Resistance
    − Primarily designed for heat resistance, T-310/T-310S are good to 1150˚C for continuous service and offer resistance to 1038˚C for intermittent service. They provide good resistance to thermal fatigue and cyclic heating. Excellent corrosion resistance at normal temperatures, with good resistance to carburizing and reducing environments at high temperatures.
    Mechanical Properties
    − Typical – at Room Temperature
    − Tensile Strength – 95,000 psi (655 N/mm2)
    − Yield Strength – 45,000 psi (310 N/mm2)
    − Elongation – 50%
    − Hardness – Rb 179 (89)
    Characteristics
    − Perhaps the most versatile and widely used general purpose austenitic stainless steel. It is excellent for forming, drawing and welding, and provides good corrosion resistance without post-weld annealing. The extra low carbon analysis of T-304L, which further restricts carbide precipitation during welding permits the use of this steel in corrosive service in the as-welded condition. T-304L is essential particularly where heavier sections are involved. T-304H is a modification with .04/.10 carbon and no nitrogen content. The mechanical test requirements are the same as T-304 but the 'H' type is not normally subject to intergranular corrosion testing. T-304 cannot be hardened by thermal treatment but it does work harden. It is non-magnetic when annealed. Machinability is approximately 45% - 75 surface feet per minute
    Typical Applications
    − These grades are used extensively in the dairy, beverage, brewing, wine and food industries where the highest degree of cleanliness is of prime importance. Chemical equipment and storage tanks, cryogenic vessels, sinks, saucepans and kitchen equipment, architectural trim, petroleum refinery equipment
    Corrosion and Heat Resistance
    − T-304 is highly resistant to strong oxidizing acids, such as nitric acid, and resists many organic and inorganic chemicals. Excellent for hot petroleum products. It has good scale resistance up to 900˚C in continuous service and 843˚C for intermittent service. T-304L would be equal and generally superior.
    Special Products – Tool Steels
    P20 + S, 420 and 420 ESR
    Characteristics
    − Hardness as supplied 280-325 BH
    − Improved machinability to P20 with good polishability
    Typical Applications
    − Plastic Moulds, Mould Frames and Pressure Casting Dies
    − Sleeves of Recipients
    Typical Heat Treatment
    − Refer to Information for P20
    Specialty –
    AISI 420 and 420 ESR
    - Plastic Mould Grades
    Typical Analysis
    Characteristics
    − Cold drawn, centreless ground.
    − Typical Surface Finish:
    − Clean, bright smooth finish; defect free.
    − Smoother finish than Smooth Turned. RMS
    − Finish: 30 max guaranteed.
    − Straightness 0.0625” in 5 ft.
    Typical Applications
    − Boat shafting, cylinder rods, pulp, paper, chemical and petro chemical industries.
    Characteristics
    − Corrosion resistance plus good polishability
    − Good machinability due to the additional calcium treatment
    − For severe applications 420 ESR is suggested
    Typical Applications
    − Moulds for processing corrosive plastics

    ALLOY 800 SEAMLESS PIPE


    from 1/8" diameter to 12" diameter.
    − Sheets are stocked from 26 GA to 10 GA. Maximum width 60".
    − Plates are stocked from 3/16" to 3".
    − T303 CD Rounds, Hexagons
    − T304/304L Rounds
    − T304 HRAP Flats, Slit Edge and Mill Edge
    − T304 CD/HRAP Hexagons
    − T304 HRAP Angles
    − T304/304L 2B and #4 Finish Sheet/Coil
    − T304/304L HRAP Sheet/Coil
    − T304/304L HRAP Plate
    − 309S Plate
    − T310/T310S Plate
    − T316/316L Rounds
    − T316L CG Rounds
    − T316L HRAP Angles
    − T316/316L PSQ Rounds
    − T316 HRAP Flats, Slit Edge and Mill Edge
    − T316 CD/HRAP Hexagons, Squares
    − T316/316L 2B Finish Sheet/Coil
    − T316/316L Plate, HRAP
    − T317L Plate, HRAP
    − T410 HT CG/RT Rounds & NACE MR-01-75
    − T410 CG Rounds
    − T416 PSQ Rounds
    − T630/17-4PH Condition “A” Rounds
    − T630/17-4PH H1150 (NACE) Rounds
    − 15-5PH
    − Duplex 2205 (UNS S31803) Rounds
    − XM-19
    − 13% Chrome
    − 9Cr-1Mo
    − Alloy 20Cb3
    − Duplex 2304 Plate (UNS S32304)
    − Duplex 2205 Plate (UNS S31803/S32205)
    − 904L
    − 1925 HMo Plate (6% Molybdenum)

    4140 CD and Hot Finished Seamless Mechanical Tubing, L80 & P100
    − Stainless Steel Ornamental Tubing
    − Non-Magnetic Drilling Components, Staballoy AG 17TM
    − Enhanced Corrosion Resistance Non-Magnetic Steel, Datalloy 2TM
    − Nickel/ Cobalt Alloys 400, 500
    − Nickel/ Cobalt Corrosion Resistant Alloys, C-276, C-22
    − Tool Steels Drilling/Mining

    Continuous Cast Iron Bar – Pearlitic Gray Iron - G2
    − Continuous Cast Iron Bar – 80-55-06
    − Continuous Cast Iron Bar – 100-70-02

    Carbon Steel Bars (Hot Rolled) are stocked from 1" to 24" diameter.
    Cold Finished Steel Bars are stocked from 1/8" to 8" diameter.
    − 1018 Rounds
    − 1040/ 1045 Rounds
    − A105/A350-LF2
    − 1018 Cold Finished Steel Rounds, Squares, Flats
    − 12L14 Cold Finished Steel Rounds, Hexagons
    − 1045 Cold Finished Steel Precision Ground Shafting
    − 1045 Cold Finished Steel Chrome Plated Shafting (Imperial & Metric)
    − 1045 Cold Finished Steel Induction Hardened, Chrome Plated Shafting (Imperial & Metric
    − 1144 Cold Finished Steel CD Hi-Strength

    Aluminum− 6061 T6 Rounds
    Bronze Cast
    − SAE 660 Bearing Bronze (C93200, ASTM B505)
    − Alloy 954 Aluminum Bronze (C95400, ASTM B505)


    Alloy Steel bars (Hot Rolled) are stocked from 3/8" to 26 ½" diameter

    − 3312 Annealed Round

    − 4130 Heat Treated Rounds, API 6A
    − 4140 Annealed Rounds
    − 4140 Annealed Hexagons, Squares, Flats
    − 4140 HTSR Rounds
    − 4140 Plate
    − 4140 Rc 22 max Rounds
    − 4140 Cold Finished Steel Chrome Plated Shafting & HTSR Precision Ground & Cold Drawn
    − 4145H Mod HTSR
    − 4150 Calcium Treated HTSR Rounds
    − 4330+V Modified, HTSR
    − 4340 Annealed Rounds, CQ and AQ, squares & flats
    − 4340 HTSR Rounds, CQ and AQ
    − EN30B Quench & Tempered Rounds, Annealed Rounds
    − 8620 Hot Rolled Rounds, and cold finished
    − 52100

    ALLOY 800 SEAMLESS PIPE


    Alloy 800 nickel pipe is strong and resistant to oxidation and carburization at elevated temperatures. Resists sulfur attack, internal oxidation, scaling and corrosion in wide variety of atmospheres.
    Typical applications include heat exchangers, process piping ,carburizing fixtures and retorts, heating element sheathing, nuclear steam generator tubing and other components.

    Stock Size Range:

    OD:1/2" through 6"
    Wall:Schedule 40 through Schedule 80
    Specifications: ASTM B407, ASME SB407


    Typical Chemical Composition %
    Nickel30.0-35.0
    Iron39.5 min
    Silicon1.0 max
    Sulfur0.015 max
    Carbon0.10 max
    Manganese1.50 max
    Copper0.75 max
    Al0.15-0.60
    Cr19.0-23.0
    Ti0.15-0.60



    Typical Mechanical Properties
    Annealed1000 psi
    Yield Strength (0.2% offset)65 min psi
    Tensile Strength25 min psi
    Elongation % in 2 inches30

    Technické dodací předpisypro ušlechtilé oceli
    ČSN 42 0251:1989 “Trubky ocelové bezešvé se zaručenými vlastnostmi za vyšších teplot”
    DIN 17175:1979 “Bezešvé trubky z žáropevných ocelí” jakostní stupeň I
    ASTM A 106:2004 + ASME SA 106:2004 “Všeobecné požadavky pro bezešvé trubky z uhlíkových ocelí pro práci za vysokých teplot”
    ASTM A 192:20021 “Specifikace pro bezešvé kotlové trubky z uhlíkových ocelí určených pro práci za vysokých tlaků”
    ASTM A 210:2004 1 “Specifikace pro bezešvé trubky kotlové a trubky pro přehřívače z ocelí se středním obsahem uhlíku”
    ASTM A 333:2004 + ASME SA 333:2001 “Specifikace pro bezešvé a svařované ocelové trubky pro práci za nízkých teplot”
    ASTM A 530:2004 + ASME SA 530M:2001“Všeobecné požadavky pro speciální trubky z uhlíkových a slitinových ocelí”
    ASTM A 450:2004 “Všeobecné požadavky pro trubky z uhlíkových, feritických slitinových a austenitických slitinových ocelí”
    NF A 49 – 211:19891 “Ocelové trubky bezešvé s hladkými konci z nelegovaných ocelí pro dopravu tekutin za zvýšených teplot”
    EN 10208-1,2:19971, 1996 “Ocelové trubky pro potrubí na hořlavá média“
    EN 10210-1,2:1994, 1997 “Za tepla válcované duté profily pro konstrukční užití z nelegovaných a jemnozrnných konstrukčních ocelí“
    EN 10216-2:2002+A1 2004 “Bezešvé ocelové trubky pro tlakové účely” Část 2 – Trubky z nelegovaných ocelí se zaručenými vlastnostmi
    za vyšších teplot
    EN 10216-3:2002+A1/ 2004 “Bezešvé ocelové trubky pro tlakové účely” Část 3 – Trubky z legovaných jemnozrnných ocelí
    KN 45 11081:1997 “Pažnice typ III pro hlubinné vrtání – technické dodací podmínky”
    Rourovny mohou po dohodě dodávat bezešvé trubky hladké jak z neušlechtilých ocelí, tak v kotlovém provedení z ušlechtilých uhlíkových ocelí podle dalších
    zahraničních norem, pokud jejich rozměry odpovídají rozměrovému rozsahu trubek vyráběných podle DIN 2448, ASTM B36.10M nebo ČSN 42 5715
    a ČSN 42 5716.

    ALLOY 800 SEAMLESS PIPE Pictures





    SX-Clad pipe offers

    • Higher mechanical strength due to 100% bonding
    • Excellent weld ability, heat transfer and thermal stability
    • Proven corrosion resistance of the NiCr family of alloys
    • Thinner walls and less weight compared to solid CRA pipe
    due to the higher strength of the carbon steel host pipe
    • Superior mechanical properties because both components
    have wrought structures
    • Easy fit-up and field welding, thanks to process control
    of the CRA and host dimensions.

    A complete range of cold-formed fittings can be produced from all SX-Clad
    combinations – 1:1 produced from standard sized SX-Clad pipe. No special
    dimensions and tolerances are needed as starting material for the fitting
    production.
    Diameter Range: Current range up to 14” O.D.
    Wall Thickness: Up to Schedule 160
    (special thicknesses available)
    Length Range: Up to length 12,80m/ 42 ft. (depending
    on O.D. and wall thickness)
    Clad Thickness: Typically 2.5 mm to 4 mm (0.10” to 0.16”)
    (special thicknesses available)
    Available Combinations :
    Host Materials CRA Materials
    Carbon Steel SS304/304L
    High-yield Grades SS316/316L
    Low Alloy Steels SS317/317L
    Stainless Steels SS321/321H
    Chrome Moly Steels SS347/347H/ SS904/904L
    Alloy 825/Alloy 625 & Others

    Quality 17-4PH T-630 UNS S17400 17-4 Duplex Stainless Steel Tube Chromium Nickel Precipitation Age Hardening Martensitic for sale
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