440 440C 440A 440B Stainless Steel Tube ASTM A312 A270 Prime SS Seamless Pipe 7Cr17 Large Diameter

1. Low MOQ and Flexible Production Ability.
2. Quick delivery and standard industry exporting package.
3. Best service with 24 hour`s reply
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5. OEM and ODM, welcome customers to visit our factory for better understanding;
6. Approved by ISO9001, CE, third party inspection such as SGS BV is welcomed;
7. Our factory provide steel products with competitive price and reliable quality ;
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Product Description

440 stainless steel pipe 440C has the highest hardness of any stainless steel, heat-resistant steel. For nozzles, bearings. 440F: It is a steel grade that improves the easy cut performance of 440C steel. For automatic lathes.


440 stainless steel pipe 440A stainless steel has excellent quenching hardening performance, high hardness, and higher toughness than 440B steel and 440C steel.


440 stainless steel pipe 440B stainless steel has higher hardness than 440A steel and higher toughness than 440C steel. 440B stainless steel is used for cutting tools, measuring tools and bearings, valves. Suitable for making blades for bayonets.


Item440 440C 440A 440B Stainless Steel Tube ASTM A312 A270 Prime SS Seamless Pipe 7Cr17 Large Diameter
StandardASTM A213,A312,ASTM A269,ASTM A778,ASTM A789
Material304,304L,309S,310S,316,316Ti,317,317L,321,347,347H,304N,316L,316N,201,220,2507,904l,etc
SurfacePickling , Polished , Hairline , Mirror 
Typehot rolled ,cold rolled / cold drawn 
stainless steel round pipe / tube
SizeWall thickness1.24 - 59.54 mm (SCH5S-XXS)
Outer diameter10.3 - 1219mm (1/8"- 48")
stainless steel square / rectangular pipe / tube
SizeWall thickness1mm-150mm(SCH10-XXS)
Outer diameter4mm*4mm-800mm*800mm
Length4000mm,5800mm,6000mm,12000mm,or as required.
Price termsFOB,CIF,CFR,CNF,Ex-work
Delivery timePrompt delivery or as the order quantity.
PackageStandard export seaworthy package,or as required. 
ApplicationWidely used in petroleum,foodstuff,chemical industry,construction, electric power,nuclear,energy,machinery,biotechnology,shipbuilding,boiler fields.


Chemical parameter.jpg


UNSASTMENJISC%Mn%P%S%Si%Cr%Ni%Mo%
S201002011.4372SUS201≤0.155.5-7.5≤0.06≤0.03≤1.0016.0-18.03.5-5.5-
S202002021.4373SUS202≤0.157.5-10.0≤0.06≤0.03≤1.0017.0-19.04.0-6.0-
S301003011.4319SUS301≤0.15≤2.00≤0.045≤0.03≤1.0016.0-18.06.0-8.0-
S304003041.4301SUS304≤0.08≤2.00≤0.045≤0.03≤0.7518.0-20.08.0-10.5-
S30403304L1.4306SUS304L≤0.03≤2.00≤0.045≤0.03≤0.7518.0-20.08.0-12.0-
S30908309S1.4833SUS309S≤0.08≤2.00≤0.045≤0.03≤0.7522.0-24.012.0-15.0-
S31008310S1.4845SUS310S≤0.08≤2.00≤0.045≤0.03≤1.5024.0-26.019.0-22.0-
S316003161.4401SUS316≤0.08≤2.00≤0.045≤0.03≤0.7516.0-18.010.0-14.02.0-3.0
S31603316L1.4404SUS316L≤0.03≤2.00≤0.045≤0.03≤0.7516.0-18.010.0-14.02.0-3.0
S31703317L1.4438SUS317L≤0.03≤2.00≤0.045≤0.03≤0.7518.0-20.011.0-15.03.0-4.0
S321003211.4541SUS321≤0.08≤2.00≤0.045≤0.03≤0.7517.0-19.09.0-12.0-
S347003471.455SUS347≤0.08≤2.00≤0.045≤0.03≤0.7517.0-19.09.0-13.0-
S405004051.4002SUS405≤0.08≤1.00≤0.04≤0.03≤1.0011.5-14.5≤0.60-
S409004091.4512SUS409≤0.08≤1.00≤0.045≤0.03≤1.0010.5-11.75≤0.50-
S430004301.4016SUS430≤0.12≤1.00≤0.040≤0.03≤0.7516.0-18.0≤0.60-
S434004341.4113SUS434≤0.12≤1.00≤0.040≤0.03≤1.0016.0-18.0--
S444004441.4521SUS444L≤0.025≤1.00≤0.045≤0.03≤1.0017.5-19.5≤1.00-
S40300403-SUS403≤0.155.5-7.5≤0.04≤0.03≤0.5011.5-13.0≤0.60-
S4100004101.40006SUS410≤0.15≤1.00≤0.035≤0.03≤1.0011.5-13.5≤0.60≤1.00
S420004201.4021SUS420J10.16~0.25≤1.00≤0.04≤0.03≤1.0012.0-14.0≤0.75≤1.00
S440A440A1.4028SUS440A0.60~0.75≤1.00≤0.04≤0.03≤1.0016.0-18.0-≤0.75
S32750SAD25071.441
≤0.03≤1.2≤0.035≤0.02≤0.8024.0-26.06.0-8.03.0-5.0
S31803SAF22051.4462
≤0.03≤2.0≤0.03≤0.02≤1.0021.0-23.04.0-6.52.5-3.5
N08904904L1.4539
≤0.0.3≤2.0≤0.035≤0.03≤1.0018.0-20.023.0-25.03.0-4.0


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