ASTM A276 / A276M UNS S40300

ASTM A276 UNS S40300 is a material grade specification for cold-finished or hot-finished bars in S40300 stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Ferrobend uses S40300 bar stock to ASTM A276 specifications for manufacturing stainless steel S40300 bolts, nuts, screws, studs, threaded rods, other fasteners and bar stock components for general engineering purposes.

ASTM A276 specification covers requirements such as chemical composition, mechanical properties, heat treatment and other supplementary requirements for S40300 stainless steel round bars, square bars, hexagon bars and other extruded shapes.

Chemical Composition

Identification Symbol	UNS Number	Elements	Composition %
403	S40300	Carbon	0.15 max
		Manganese	1.00 max
		Phosphorus	0.040 max
		Sulfur	0.030 max
		Silicon	0.50 max
		Chromium	11.5 - 13.00

Mechanical Properties

Property	Value
Condition	A
Finish	Hot-Finished	Cold Finished
Tensile Strength, min, ksi [MPa]	70 [480]	70 [480]
Yield Strength, min, ksi [MPa]	40 [275]	40 [275]
Elongation in 2 in. [50mm] or 4D, min, %	20	16
Reduction or Area, min, %	45	45
Brinell Hardness Number, HBW	--	--

Mechanical Properties

Property	Value
Condition	T
Finish	Hot-Finished	Cold Finished
Tensile Strength, min, ksi [MPa]	100 [690]	100 [690]
Yield Strength, min, ksi [MPa]	80 [550]	80 [550]
Elongation in 2 in. [50mm] or 4D, min, %	15	12
Reduction or Area, min, %	45	40
Brinell Hardness Number, HBW	--	--

Mechanical Properties

Property	Value
Condition	H
Diameter or Thickness,in. (mm)	all	all (rounds only)
Finish	Hot-Finished	Cold Finished
Tensile Strength, min, ksi [MPa]	120 [830]	120 [830]
Yield Strength, min, ksi [MPa]	90 [620]	90 [620]
Elongation in 2 in. [50mm] or 4D, min, %	12	12
Reduction or Area, min, %	40	40
Brinell Hardness Number, HBW	--	--