98BV40 - ASTM A 646/A646M-2024

Grade	98BV40
ASTM Specification or Grade	Grade 13
Corresponding Standard	ASTM A646/A646M-2024 Standard Specification for Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings
Classification	Alloy Steel

98BV40 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	V	B
Minimum Value	0.4	0.5	0.75	-	-	0.8	0.6	0.45	0.01	0.0005
Maximum Value	0.46	0.8	1	0.015	0.012	1.05	0.9	0.6	0.06	-

* If any of the following elements are not specified, the following maximum limits shall apply: Nickel 0.35 %; Chromium 0.20 %; Molybdenum 0.06 %; Copper 0.35 %

98BV40 Mechanical Properties

Heat Treatment or Condition	Hardness HBW
Annealing	≤285

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