Grade 651 S63198 - ASTM A 453/453M-2002

Grade	Grade 651
USA UNS	S63198
Corresponding Standard	ASTM A 453/453M-2002 Standard Specification for High-Temperature Bolting Materials,with Expansion Coefficients Comparable to Austenitic Stainless Steels
Classification	Precipitation-Hardening Stainless Steel

Grade 651 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Ti	W	Nb
Minimum Value	0.28	0.3	0.75	-	-	18	8	-	1	0.1	1	0.25
Maximum Value	0.35	0.8	1.5	0.04	0.03	21	11	0.5	1.75	0.35	1.75	0.8

Grade 651 Mechanical Properties

diameter d mm(in)	Mark	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
d≤76(3)	Gr 651 Class A	Material Grade A ≥690	Material Grade A ≥485	Material Grade A ≥18	Material Grade A 217~277
d>76(3)		Material Grade A ≥690	Material Grade A ≥415	Material Grade A ≥18	Material Grade A 217~277
d≤76(3)	Gr 651 Class B	Material Grade B ≥655	Material Grade B ≥415	Material Grade B ≥18	Material Grade B 212~269
d>76(3)		Material Grade B ≥655	Material Grade B ≥345	Material Grade B ≥18	Material Grade B 212~269

New and Old Grade Replacement List

Grade651 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"!