4340
AISI/SAE 4340 (UNS G 43400) & E04340 (UNS G43406) | a Nickel-Chromium-Molybdenum Alloy Machinery Steel | ||||||||||||||||
Typical Analysis |
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Characteristics |
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Typical Applications |
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Typical Heat Treatment |
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Mechanical Properties |
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AISI/SAE 4340 (UNS G 43400) & E04340 (UNS G43406) |
Mechanical Properties
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Size - inches | 1" Dia | 2" Dia | 4" Dia | 8" Dia |
Size - mm | 25.4 mm | 50.8 mm | 101.6 mm | 203.2 mm |
Tensile Strength, psi | 114,000 | 110,000 | 106,000 | 104,000 |
Tensile Strength, N/mm² | 786 | 758 | 731 | 717 |
Yield Strength, psi | 91,000 | 86,000 | 85,500 | 81,500 |
Yield Strength, N/mm² | 627 | 593 | 590 | 562 |
Elongation (%) | 20 | 23 | 21 | 22 |
Reduction of Area (%) | 46 | 49 | 50 | 48 |
HB | 229 | 223 | 217 | 217 |
Machinability | 55 | 55 | 55 | 55 |
AISI/SAE 4340 (UNS G 43400) & E04340 (UNS G43406) |
Mechanical Properties
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Size - inches | 2" Dia | 3¾" Dia | 7" Dia | 10" Dia |
Size - mm | 50.8 mm | 95.25 mm | 177.8 mm | 254 mm |
Tensile Strength, psi | 162,000 | 155,904 | 145,152 | 144,256 |
Tensile Strength, N/mm² | 1117 | 1075 | 1000 | 995 |
Yield Strength, psi | 145,000 | 141,568 | 111,104 | 124,544 |
Yield Strength, N/mm² | 1000 | 976 | 766 | 858 |
Elongation (%) | 16 | 19 | 17 | 18 |
Reduction of Area (%) | 50 | 55 | 47 | 45 |
HB | 331 | 321 | 302 | 302 |
AISI/SAE 4340 (UNS G 43400) & E04340 (UNS G43406) |
Mechanical Properties
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Size - inches | 2" Dia | 4" Dia |
Tensile Strength, psi | 116,000 | 112,000 |
Yield Strength, psi | 94,000 | 87,500 |
Elongation (%) | 20 | 21 |
Reduction of Area (%) | 53 | 52 |
HB | 235 | 229 |
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