ASTM A710 Steel, grade A, class 1, 6.4

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ASTM A710 Steel, grade A, class 1, 6.4 - 8.0 mm thick
Categories:	Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; ASTM Steel; Carbon Steel; Low Carbon Steel
Material Notes:	Meets A710/A710M-02 Standard Specification for Precipitation-Strengthened Low-Carbon Nickel-Copper-Chromium-Molybdenum-Columbium Alloy Structural Steel Plates. Northwestern University developed copper-precipitation-hardened, high-performance weathering steel that is produced by hot rolling after casting and then air-cooling. Due to simple processing the steel is fabricated at lower cost than competing high-performance steels that require quench and tempering. This steel can be easily welded without pre- or post-heating. The fracture toughness of the steel is excellent particularly at cryogenic temperatures. Weathering resistance and corrosion properties are better than that of any other available construction steel. The steel is an excellent candidate for infrastructure applications such as bridges, posts, signs, railings, etc. as well as for applications in other fields. Information provided by Professor Semyon Vaynman of Northwestern University.
Key Words:	UNS K20747
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Physical Properties	Metric	English	Comments

Density	7.80 g/cc	0.282 lb/in³	Typical of ASTM Steel

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	620 MPa	89900 psi
Tensile Strength, Yield	585 MPa	84800 psi
Elongation at Break	20 %	20 %	in 50 mm
Bulk Modulus	160 GPa	23200 ksi	Typical for steel
Shear Modulus	80.0 GPa	11600 ksi	Typical for steel

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.070 %	<= 0.070 %
Chromium, Cr	0.75 %	0.75 %
Copper, Cu	1.15 %	1.15 %
Iron, Fe	96 %	96 %
Manganese, Mn	0.55 %	0.55 %
Molybdenum, Mo	0.20 %	0.20 %
Nickel, Ni	0.85 %	0.85 %
Niobium, Nb (Columbium, Cb)	>= 0.020 %	>= 0.020 %
Phosphorus, P	<= 0.025 %	<= 0.025 %
Silicon, Si	<= 0.40 %	<= 0.40 %
Sulfur, S	<= 0.025 %	<= 0.025 %

References for this datasheet.

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MS710A / 14013

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