24 July 2021 300 Series Stainless Steel
301 Stainless Steel Strip
301 stainless steel strip is a kind of metastable austenitic stainless steel, which has a completely austenitic structure under the condition of full solution. Among stainless steels, 301 is the steel that is most easily strengthened by cold deformation. Cold deformation can increase the strength and hardness of the steel and retain sufficient plasticity and toughness. In addition, this steel has good rust resistance under atmospheric conditions.
However, it has poor corrosion resistance in reducing media and poor corrosion resistance in chemical media such as acid, alkali and salt, so it is not recommended for use in harsh environments. 301 is mainly used in cold working state to withstand higher loads, and it is hoped to reduce equipment weight and rust-free equipment parts. In addition, this steel is prone to work hardening when impacted by an external force, which can absorb more impact energy, and will provide more reliable safety guarantees for equipment and personnel. 301 is prone to work hardening during deformation, and is used in places requiring higher strength.
Chemical Composition:
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
Mechanical Properties:
Tensile strength σb (MPa): ≥520
Conditional yield strength σ0.2 (MPa): ≥205
Elongation δ5 (%): ≥40
Reduction of area ψ (%): ≥60
Hardness: ≤187HB; ≤90HRB; ≤200HV
Density 7.93 g cm-3
Specific heat c(20℃)0.502 J·(g·C)-1
Thermal conductivity λ/W(m·℃)-1 (at the following temperature/℃) 20 100 500 12.1 16.3 21.4
Linear expansion coefficient α/(10-6/℃) (between the following temperatures/℃) 20～100 20～200 20～300 20～400 16.0 16.8 17.5 18.1
Resistivity 0.73 Ω·mm2·m-1
Melting point: 1398～1420℃
Heat treatment specification and metallographic structure:
- Heat treatment specification: solid solution 1010～1150℃ and fast cooling.
- Metallographic structure: The structure is characterized by austenite type.