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303 Stainless Steel Tube
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Product: Views:499303 Stainless Steel Tube 
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Valid until: Long-term effective
Last updated: 2018-06-21 19:30

303 Stainless steel pipe is an austenitic shape containing sulfur and selenium, easily cut and wear-resistant acid steel, used to require easy cutting and surface finish high standards: GB/T 1220 Special Additions: 0.60 ﹪ Molybdenum


303 Stainless Steel Pipe

Standard: GB/t 1220

303 stainless steel pipe is an austenitic shape easy to cut wear-resistant acid steel, in order to improve the performance of the steel, can be added in the steel not more than 0.60 ﹪ molybdenum, can be resistant to ablation.

303 stainless steel mechanical properties after annealing to stress, tensile 515MPa, yield 205MPa, elongation rate of 40%. Stainless Steel 303 Standard hardness HRB 90-100, HRC 20-25, note: HRB100 = HRC22.9. 303 is easy to cut stainless steel which contains sulfur and selenium respectively, and is used for occasions where easy cutting and high surface finish are required.

303 stainless steel improves cutting performance and high temperature resistance bonding properties.

Application fields

Petroleum, electronics, chemical, pharmaceutical, textile, food, machinery, construction, nuclear power, aerospace, military and other industries

303 Mechanical Properties of Stainless Steel Pipe

Chemical Composition

C ≤ 0.15%

Si ≤ 1%

Mn ≤ 2%

P ≤ 0.2%

S ≥ 0.15%


Ni: 8.00-10.00(%)

Mo: ≤ 0.06%


Mechanical Properties

Tensile strength Σb (MPa) ≥ 520

Conditional yield strength σ0.2 (MPa)  ≥ 205

Elongation rate δ5 (%) ≥ 40

Section shrinkage rate of PSI (%) ≥ 50

Hardness: HB≤187HB; HRC≤90HRB; HV≤200HV



Specification for heat treatment: solution 1010~1150℃ fast cold. 

Metallographic structure: The organization characteristic is the austenite shape.



Grading ① National Standard Gb② industry standards Yb③ Local standard ④ enterprise standard Q/CB

Classification ① product Standard ② Packaging standard ③ method standard ④ Basic standard

Standard level Y: International Advanced Level I: International General level H class: domestic Advanced Level

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