A194 Grade 8CLNCuB S34752 - ASTM A194/A194M-2026

Grade	A194 Grade 8CLNCuB
USA UNS	S34752
Corresponding Standard	ASTM A194/A194M-2026 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

A194 Grade 8CLNCuB 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	1	2	0.035	0.01	19	13	3.5	1.2	0.12	0.5	0.005	Nb:≥15C

* Do not intentionally include bismuth (Bi), selenium (Se), antimony (Sb), or lead (Pb).
* Because of the degree to which sulfur segregates, product analysis for sulfur over 0.060 % max is not technologically appropriate.

A194 Grade 8CLNCuB Mechanical Properties

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

A194Grade8CLNCuB Corresponding Standards(Same grade name, different standards)

1	ASTM A194/A194M-2020
	A194 Grade 8CLNCuB S34752
2	ASTM A194/A194M-2026
	A194 Grade 8CLNCuB S34752

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!