T91 - ASTM A831/A831M-1995(R2000)

Grade	T91
Corresponding Standard	ASTM A831/A831M-1995(R2000) Standard Specification for Austenitic and Martensitic Stainless Steel Bars, Billets, and Forgings for Liquid Metal Cooled Reactor Core Components
Classification	Martensitic Stainless Steel

T91 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N	V	Nb	Al
Minimum Value	0.08	0.2	0.3	-	-	8	-	0.85	0.03	0.18	0.06	-
Maximum Value	0.12	0.5	0.6	0.02	0.01	9.5	0.4	1.05	0.07	0.25	0.1	0.04

T91 Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
tempered	≥585	≥415	≥20	≤250

T91 Corresponding Standards(Same grade name, different standards)

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