A194 Grade 8R S20910 XM19 - ASTM A194/194M-2016

Grade	A194 Grade 8R
USA UNS	S20910
Other Names
Corresponding Standard	ASTM A194/194M-2016 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

• The intentional addition of Bi, Se, Te, and Pb is not permitted except for Grades 6F, 8F, and 8FA, in which Se is specified and required.

A194 Grade 8R Mechanical Properties

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

A194Grade8R Corresponding Standards(Same grade name, different standards)

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