303 stainless steel flat bar
303 stainless steel is an austenitic free-cutting stainless and wear-resistant acid steel. In order to improve the performance of the steel, no more than 0.60% of molybdenum can be added to the steel to resist ablation
Features
303 stainless steel bar: By adding a small amount of sulfur and phosphorus, it is easier to cut than 304, and other properties are similar to 304.
Application scope: petroleum, electronics, chemical, pharmaceutical, textile, food, machinery, construction, nuclear power, aerospace, military and other industries!
Mechanical properties of 303 stainless steel after annealing and stress relief, tensile strength is 515MPa, yield is 205MPa, and elongation is 40%. The standard hardness of stainless steel 303 is HRB 90-100, HRC 20-25, note: HRB100 = HRC22.9
303 is a free-cutting stainless steel that contains sulfur and selenium, respectively, and is used in occasions that mainly require free cutting and high surface finish. 303 stainless steel improves cutting performance and high temperature resistance bonding performance. Most suitable for automatic lathes, bolts and nuts.
chemical composition
C: ≤0.15%
Si: ≤1.00%
Mn:≤2.00%
P :≤0.20%
S: ≥ 0.15%
Cr: 17.00-19.00 (%)
Ni :8.00-10.00 (%)
Mo :≤0.06%
Mechanical properties
Tensile strength σb (MPa): ≥520
Conditional yield strength σ0.2 (MPa): ≥205
Elongation δ5 (%): ≥40
Reduction of area ψ (%): ≥50
Hardness: HB≤187HB; HRC≤90HRB; HV≤200HV
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