420S29

420S29 Stainless Steels to BS 1503

420S29 - Specification & Application

• BS 1503 - Specification for steel forgings for pressure purposes
• BS 1554 - Specification for stainless and heat-resisting steel round wire
• BS 5770-4 - Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel
• 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 420S29 grade: to BS 1503

420S29 - Detail

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

Mechanical properties of grade 420S29 BS 1503

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)
955 (≥)	982 (≥)	23	34	12	Solution and Aging, Annealing, Ausaging, Q+T,etc	412

Physical properties of grade 420S29 BS 1503

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
766 (≥)	889 (≥)	31	44	24	Solution and Aging, Annealing, Ausaging, Q+T,etc	423
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
894	828	636