HP 9-4-30 - ASTM A 646/A646M-2024

Grade	HP 9-4-30
ASTM Specification or Grade	Grade 17
Corresponding Standard	ASTM A646/A646M-2024 Standard Specification for Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings
Classification	Alloy Steel

HP 9-4-30 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	V	Co
Minimum Value	0.29	-	0.1	-	-	0.9	7	0.9	0.06	4.25
Maximum Value	0.34	0.1	0.35	0.01	0.01	1.1	8	1.1	0.12	4.75

* 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 %

HP 9-4-30 Mechanical Properties

Heat Treatment or Condition	Hardness HBW
Annealing	≤341

Approximate Comparison Table Processing Titanium and Titanium Alloys

China	Japan	United States	International Organization for Standardization	Germany	France	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	BS EN/BS
TA8-1	Class 17	Grade 17	Ti-0.05Pd(a)	Ti1Pd	T-Pd(a)	Ti-0.05Pd(a)

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