ASTM A240 Type 904L Bolt, Nuts, Washers Manufacturer in India

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ASTM A240 Type 904L, ASTM A240 Type 904L Bolt, Nuts, ASTM A240 Bolt Manufacturer in India – China Inconel Bolts Inc.

ASTM A240 Type 904L is a high-strength 5 percent chromium ferritic steel used to manufacture bolts, studs, stud bolts, and other fasteners for bolting pressure vessels, valves, flanges, and fittings, particularly in the power generation industry. The ASTM A240 standard includes alloy and stainless steel bolting for pressure vessels, valves, flanges, and fittings used in high temperature or high-pressure applications, as well as other special applications. There are many grades covered, including ferritic steels and austenitic stainless steels with designations such as B5, B6, B7, B8, B8M, and so on.

ASTM A240 Type 904L Chemical Composition

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	Cu
904L	min. max.	– 0.02	– 2	– 1	– 0.045	– 0.035	19 23	4 5	23 28	1 2

ASTM A240 Type 904L Mechanical Composition

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B)	Brinell (HB)
904L	490	220	36	70-90 typical	150