NA 21 - BS 3076-1989

Grade	NA 21
Corresponding Standard	BS 3076-1989 Specification for Nickel and Nickel Alloys: Bar
Classification	Alloy Steel
Properties	Corrosion Resistance

NA 21 Chemical Element Composition Content (%)

Component	Fe	C	Si	Mn	P	S	Cr	Ni	Mo	Ti	Nb ^*	Co	Al
Minimum Value	-	-	-	-	-	-	20	58	8	-	3.15	-	-
Maximum Value	5	0.1	0.5	0.5	0.015	0.015	23	-	10	0.4	4.15	1	0.4

NA 21 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
Bar (Round, Square, Rectangular, and Hexagonal); d≤100	Cold Work + Annealing	≥830	Rp0.2: ≥415 Rp0.1: ≥455	≥30
Bar (Round); d＞100	Hot Work + Annealing	≥760	Rp0.2: ≥345 Rp0.1: ≥385	≥25
Bar; All Specifications	Cold processing + Solution annealing or Hot processing + Solution annealing	≥690	Rp0.2: ≥275	≥30

Approximate Comparison Table Corrosion-Resistant Alloy

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