Astralloy 4145 H-Mod Alloy Steel Round Bars

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Astralloy 4145 H-Mod Alloy Steel Round Bars
Categories:	Metal; Ferrous Metal; Alloy Steel
Material Notes:	Quenched and tempered for uniformity in strength, shock resistance, ductility and hardness. Versatile machinery steel. Furnished in a hot rolled state. Minimum: 125 ksi yield. Hardness: 287 – 332 BHN. Mechanical properties at 1” below surface. Information provided by Astralloy, a Nucor Company.
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Mechanical Properties	Metric	English	Comments

Hardness, Brinell	287 - 332	287 - 332
Tensile Strength	965 MPa	140000 psi
Tensile Strength, Yield	862 MPa	125000 psi
Elongation at Break	14 % @Thickness 50.8 mm	14 % @Thickness 2.00 in
Reduction of Area	45 %	45 %
Charpy Impact	54.2 J	40.0 ft-lb

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.49 %	<= 0.49 %
Chromium, Cr	<= 1.2 %	<= 1.2 %
Iron, Fe	>= 94.8 %	>= 94.8 %	As Balance
Manganese, Mn	<= 1.3 %	<= 1.3 %
Molybdenum, Mo	<= 0.45 %	<= 0.45 %
Nickel, Ni	<= 1.0 %	<= 1.0 %
Phosphorus, P	<= 0.35 %	<= 0.35 %
Silicon, Si	<= 0.35 %	<= 0.35 %
Sulfur, S	<= 0.040 %	<= 0.040 %

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NNUCOR916 / 233190

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