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301 Stainless Steel Shaft

301Stainless Steel Grade 1Cr17Ni7. Chemical Composition of Stainless Steel shaft(%) C≤0.15 Si≤1.0 Mn≤2.0 Cr: 16.0~18.0 Ni: 6.0-8.0 S ≤0.03 P≤0.045 Yield Strength(N/mm2) ≥205 Tensile Strength ≥ 520 Elongation Rate(%)≥40 Hardness: HB ≤187 HRB≤90 HV ≤200 Density: 7.93 g·cm-3 Specific Heat:...

301Stainless Steel Grade 1Cr17Ni7.

Chemical Composition of Stainless Steel shaft(%)

C≤0.15 

Si≤1.0 

Mn≤2.0 

Cr: 16.0~18.0 

Ni: 6.0-8.0

S ≤0.03 

P≤0.045


Yield Strength(N/mm2) ≥205

Tensile Strength ≥ 520

Elongation Rate(%)≥40

Hardness: HB ≤187 HRB≤90 HV ≤200

Density: 7.93 g·cm-3

Specific Heat: c(20℃)0.502 J·(g·C)-1

Resistivity0.73 Ω·mm2·m-1

Melting Point: 1398~1420℃


Mechanical Property of 301 Stainless Steel Shaft 

Tensile Strength σb (MPa) ≥520

Conditional Yield Strength σ0.2 (MPa)≥205

Elongation Rate δ5 (%):≥40

Area of Reduction ψ (%):≥60

Hardness ≤187HB;≤90HRB;≤200HV

Thermal Treatment Standard and Metallographic Organization:

Hot treatment standard: solid solution 1010 ℃~1150 ℃ fast cooling.


The rust-proof mechanism of stainless steel is that alloy elements form a dense oxide film to insulate oxygen contact and prevent further oxidation. 


The causes that 301 Stainless Steel Shaft might get rust:

1. In the chloride contained environment, the corrosion is so fast that it corrodes faster than the ordinary low-carbon steel. So the using environment of stainless steel should be wiped, dust removed, clean and dry. 

2. The alloy elements were not dissolved into the matrix, which resulted in low alloy content in matrix organization and poor corrosion resistance.

3. This titanium and niobium free material has a natural tendency to inter-granular corrosion. Add titanium and niobium and then disposes stably can decrease the inter-granular corrosion. 


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