A194 Grade 8R S20910 - ASTM A194/A194M-2023

Grade	A194 Grade 8R
USA UNS	S20910
AISI American Iron and Steel Institute	XM19
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 8R Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N	V	Cb
Minimum Value	-	-	4	-	-	20.5	11.5	1.5	0.2	0.1	0.1
Maximum Value	0.06	1	6	0.045	0.03	23.5	13.5	3	0.4	0.3	0.3

A194 Grade 8R Mechanical Properties

product	Hardness HBW
Finished Nuts	182~271HBW ≤25HRC ≥88HRB

A194Grade8R Corresponding Standards(Same grade name, different standards)

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