420S37

420S37 Stainless Steels to BS 1554

420S37 - Specification & Application

• BS 1554 - Specification for stainless and heat-resisting steel round wire
• BS 6258 - Specification for hollow steel bars for machining
• BS 970-1 - Specification for wrought steels for mechanical and allied engineering purposes. General inspection and testing procedures and specific requirements for carbon, carbon manganese, alloy and stainless steels
• BS 970-3 - Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes

Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes

Chemical composition(wt.%) of 420S37 grade: to BS 1554

420S37 - Detail

Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes

Mechanical properties of grade 420S37 BS 1554

Proof strength Rp0.2 (MPa)	Tensile strength Rm (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
637 (≥)	663 (≥)	12	13	21	Solution and Aging, Annealing, Ausaging, Q+T,etc	213

Physical properties of grade 420S37 BS 1554

Property	Density kg/dm3	Temperature T °C/F	Specific heat J / kgK	Thermal conductivity W/mK	Electric resistance µΩ·cm	Modulus of elasticity kN/mm2	Expansion rate
638 (≥)	229 (≥)	24	32	41	Solution and Aging, Annealing, Ausaging, Q+T,etc	314
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
325	213	466