ATI Allvac® Vasco® 4340 Specialty Steel, Heat Treatment: 899°C (1650°F) Q+T

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ATI Allvac® Vasco® 4340 Specialty Steel, Heat Treatment: 899°C (1650°F) Q+T
Categories:	Metal; Ferrous Metal; Alloy Steel
Material Notes:	Data provided by Allvac. Applications: Rocket motor cases, ordnance hardware, aircraft structural components, transmission gears, components, fasteners.
Key Words:	Allvac, an Allegheny Teledyne Company, UNS G43400; AMS 6414, 6415, 6359, 6409, 6454. ASTM A 29, A 320, A 322, A 331; MIL-S-5000.
Vendors:	Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494. Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
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Physical Properties	Metric	English	Comments

Density	7.83 g/cc	0.283 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	422	422	Estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball
Hardness, Knoop	463	463	Estimated from Rockwell C value.
Hardness, Rockwell C	45	45
Hardness, Vickers	442	442	Estimated from Rockwell C value.
Tensile Strength, Ultimate	1724 MPa	250000 psi
Tensile Strength, Yield	1517 MPa @Strain 0.2 %	220000 psi @Strain 0.2 %
Elongation at Break	8.0 %	8.0 %
Reduction of Area	18 %	18 %

Component Elements Properties	Metric	English	Comments
Carbon, C	0.41 %	0.41 %
Chromium, Cr	0.80 %	0.80 %
Iron, Fe	96 %	96 %	as balance
Manganese, Mn	0.70 %	0.70 %
Molybdenum, Mo	0.25 %	0.25 %
Nickel, Ni	1.9 %	1.9 %
Phosphorus, P	0.018 %	0.018 %
Silicon, Si	0.23 %	0.23 %
Sulfur, S	0.020 %	0.020 %

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NALL70 / 14802

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