416S21

416S21 Stainless Steels to BS 1554

416S21 - Specification & Application

• BS 1554 - Specification for stainless and heat-resisting steel round wire
• 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

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

Chemical composition(wt.%) of 416S21 grade: to BS 1554

416S21 - Detail

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

Mechanical properties of grade 416S21 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)
279 (≥)	821 (≥)	22	41	31	Solution and Aging, Annealing, Ausaging, Q+T,etc	432

Physical properties of grade 416S21 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
699 (≥)	892 (≥)	23	13	13	Solution and Aging, Annealing, Ausaging, Q+T,etc	121
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
833	699	571