A891 Type 1 - ASTM A891/A891M-2024

Grade	A891 Type 1
Corresponding Standard	ASTM A891/A891M-2024 Standard Specification for Precipitation Hardening Iron Base Superalloy Forgings for Turbine Rotor Disks and Wheels
Classification	Alloy Steel

A891 Type 1 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	Ti	V	B	Al	More
Minimum Value	-	-	-	-	-	13.5	24	1	1.9	0.1	0.003	-	Fe：remainder
Maximum Value	0.05	0.5	2	0.025	0.015	16	27	1.5	2.35	0.5	0.01	0.35	Fe：remainder

A891 Type 1 Mechanical Properties

Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
≥965	≥655	≥12	≥15	277~363

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