A194 Grade B8ML4CuN S31730 - ASTM A194/A194M-2023

Grade	A194 Grade B8ML4CuN
USA UNS	S31730
AISI American Iron and Steel Institute	317
Corresponding Standard	ASTM A194/A194M-2023 Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance

A194 Grade B8ML4CuN Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N
Minimum Value	-	-	-	-	-	17	15	4	3	-
Maximum Value	0.03	1	2	0.04	0.01	19	16.5	5	4	0.045

A194 Grade B8ML4CuN Mechanical Properties

product	Hardness HBW
Finished Nuts	126~300HBW ≤32HRC ≥60HRB

A194GradeB8ML4CuN Corresponding Standards(Same grade name, different standards)

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