F 837 Class A1-70 S20300 - Cast Iron and Cast Steel

F 837 Class A1-70 S20300 Stainless Steels to F 837M (2002)

F 837 Class A1-70 S20300 - Specification & Application

F 837M (2002) - Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Chemical composition(wt.%) of F 837 Class A1-70 S20300 grade: to F 837M (2002)

Elements	Min.（≥）	Max.（≤）
C	-	0.08
Mn	5.00	6.50
Si	-	1.00
P	-	0.04
S	0.18	0.35
Cr	16.00	18.00
Ni	5.00	6.00
Mo	-	0.50
Cu	1.75	2.25

F 837 Class A1-70 S20300 - Detail

Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Mechanical properties of grade F 837 Class A1-70 S20300 F 837M (2002)

Proof strength R_p0.2 (MPa)	Tensile strength R_m (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
315 (≥)	786 (≥)	44	33	32	Solution and Aging, Annealing, Ausaging, Q+T,etc	223

Physical properties of grade F 837 Class A1-70 S20300 F 837M (2002)

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
187 (≥)	435 (≥)	22	21	34	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
236	987	897

Equivalent Grade

1 A 581 S20300 2 A 582 S20300 3 F 837 Class A1-50 S20300 4 F 837 Class A1-55 S20300 5 F 837 Class A1-70 S20300 6 F738 Class A1-50 S20300 7 F738 Class A1-70 S20300 8 F738 Class A1-80 S20300 9 F836 Class A1-50 S20300 10 F836 Class A1-70 S20300

Equivalent Products

Product shapes we supply:

We can customize the production of F 837 Class A1-70 S20300 grade, contact us for the best solution.
–sales@specificsteel.com