ASME SA453 Gr 660A, B, C, and D are American standard high-temperature alloy grades; they are divided into four grades: 660A, 660B, 660C, and 660D. The four products have the same composition but different strength and mechanical properties; they are mainly used in nuclear power equipment and nuclear power Construction, petroleum equipment, chemical equipment, petrochemical engineering, boiler pumps and valves, pipeline fluids, as well as automobile engines, aerospace, weapons and military industry and other fields.
Chemical composition of ASTM A453 Gr 660A, B, C, D:
C=≤0.08, Cr=13.5~16.0, Ni=24.0~27.0, Mo=1.00~1.50, Ti=1.75~2.30, Fe=V=0.10~0.50, B=0.001~0.010, Mn=1.00~2.00, Ai= ≤0.40, Si=≤1.00, P=≤0.030, S=≤0.020
SA453-660b is equivalent to Chinese brand: GH2132
In addition to the chemical composition requirements of ASTM A453 specifications, the mechanical properties of ASTM A453 Gr 660 stainless steel bolts also meet the specifications. This is why A286 stainless steel fasteners must undergo multiple tests such as tensile testing, stress rupture testing, and hardness testing. Materials produced in accordance with this specification include ASTM A453 Gr 660 Cl. In addition to Brinell hardness and Rockwell hardness, bolts must also meet the requirements for elongation, area reduction, yield strength, and tensile strength. Hardening and solution treatment requirements for each material such as A453 Gr 660 Class A/B/C/D stud bolts are also specified.
ASTM A453 Stud Bolts
ASTM A453 J bolt
ASTM A 453 GR 660 Grade D Bolts
GR 660 screw
SS Grade 660 Plow Bolts
ASTM A 453 GR 660 Grade B Stud Bolts
ASTM A453 660 Class D Stud Bolts
Stainless steel GR 660 studs
