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403 stainless steel is a martensitic stainless steel with high chromium content and low carbon content. Also known as UNS S40300, it is commonly used in applications requiring high strength and corrosion resistance, such as industrial equipment, automotive parts, and aerospace components.
| Cr | Ni | C | Si | Mn | P | S |
| 11.5-13.0 | 0.60 | 0.15 | 0.5 | 1.0 | 0.04 | 0.03 |
| Tensile Strength ksi (min.) | Yield Strength 0.2% Offset ksi (min.) | Elongation - % in 50 mm (min.) | Hardness (Rockwell B) MAX |
| 70 | 30 | 25 | 98 |
Item | Stainless Steel Pipe/Tube | |
Standard | ASTM A213,A312,ASTM A269,ASTM A778,ASTM A789,DIN 17456, DIN17457,DIN 17459,JIS G3459,JIS G3463,GOST9941,EN10216, BS3605, | |
Material | 304,304L,309S,310S,316,316Ti,317,317L,321,347,347H,304N,316L, 316N,201,202，403 | |
Surface | Polishing,annealing,pickling,bright | |
Type | hot rolled and cold rolled | |
Stainless steel round pipe/tube | ||
Size | Wall thickness | 1mm-150mm(SCH10-XXS) |
Outer diameter | 1mm-150mm(SCH10-XXS) | |
stainless steel square pipe/tube | ||
Size | Wall thickness | 1mm-150mm(SCH10-XXS) |
Outer diameter | 4mm*4mm-800mm*800mm | |
stainless steel rectangular pipe/tube | ||
Size | Wall thickness | 1mm-150mm(SCH10-XXS) |
Outer diameter | 1mm-150mm(SCH10-XXS) | |
Length | 4000mm,5800mm,6000mm,12000mm,or as required. | |
Element | 201 | 202 | 304 | 316 | S31803 | S32750 | |
C | ≤0.15 | ≤0.15 | ≤0.08 | ≤0.08 | ≤0.030 | ≤0.030 | |
Si | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | ≤0.80 | |
Mn | 5.5-7.5 | 7.5-10.0 | ≤2.00 | ≤2.00 | ≤2.00 | ≤1.20 | |
P | ≤0.060 | ≤0.060 | ≤0.045 | ≤0.045 | ≤0.030 | ≤0.035 | |
S | ≤0.030 | ≤0.030 | ≤0.030 | ≤0.030 | ≤0.020 | ≤0.020 | |
Cr | 16-18 | 17-19 | 18-20 | 16-18 | 21-23 | 21-23 | |
Ni | 3.5-5.5 | 4.0-6.0 | 42958 | 43022 | 4.5-6.5 | 6.0-8.0 | |
Mo | 2.0-3.0 | 2.5-3.5 | 3.0-5.0 | ||||
N | ≤0.25 | ≤0.25 | 0.08-0.2 | 0.24-0.32 | |||
Cu | ≤0.50 |
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