A193 B8CLNCuB Class 1 S34752 - ASTM A193/A193M-2020

Grade	A193 B8CLNCuB Class 1
USA UNS	S34752
Corresponding Standard	ASTM A193/A193M-2020 Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance Forgability Weldability

A193 B8CLNCuB Class 1 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Nb	B	More
Minimum Value	0.005	-	-	-	-	17	10	2.5	0.2	0.06	0.2	0.001	Nb≥15C
Maximum Value	0.02	0.6	2	0.035	0.01	19	13	3.5	1.2	0.12	0.5	0.005	Nb≥15C

• The intentional addition of Bi, Se, Te, and Pb is not permitted

A193 B8CLNCuB Class 1 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
All Sizes	Carbide Solid Solution Treatment	≥515	≥205	≥30	≥50	≤223

• d-diameter of bolt, screw, studs, double-end studs, bars and wire.

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