ASTM A579 Gr.21
2016-03-07 09:45:41 Origin： Remark：0 Click：
Technical specifications of Aircraft standards high tensile strength steel ASTM A579 Gr.21 data sheet, ASTM A579 Gr.21 Chemical compositions, A579 Gr.21 Mechanical properties from Steelmaking, ESR melted, Blooming, Hot forging,Hot rolling,Heat treatment, Straightening, 100% Ultrasonic test, Cold working, Peeled or rough turned machining. Technical specification ASTM A579. We also possess the advanced precision machining equipments for catering for your different special requirements.
TECHNICAL SPECIFICATIONS - ASTM A579 Gr.21
MATERIAL CATEGORY: Ultra high strength 1450 Mpa alloy steel
MATERIAL DELIVERY CONDITION: Quenched and tempered
MAIN FEATURES: A579 series VAC-ARC steel is a medium carbon, low alloy, ultra high strength 1000Mpa steel primarily designed for high strength structural applications
A579 series steel is produced by the consumable electrode vacuum arc remelting process to provide optimum cleanliness and preferred ingot structure, which in turn provide optimum transverse mechanical properties.
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.31~0.38
Si (％): 0.20~0.35
Mn (％): 0.60~0.90
P (％)≤: 0.025
S (％)≤: 0.025
Cr (％): 0.60~0.90
Si (％): 0.20~0.35
Mn (％): 0.60~0.90
P (％)≤: 0.025
S (％)≤: 0.025
Cr (％): 0.60~0.90
Ni (%): 1.65~2.00
Mo (％): 0.30~0.60
Mo (％): 0.30~0.60
V (%): 0.17~0.23
Nb (%): -
MECHANICAL PROPERTIES
Condition: Heat treated - Quenched and tempered
Mechanical properties under standard melting
Tensile strength σb≥/MPa: 1035
Yield strength σs≥/MPa: 965
Elongation δ5≥(%): 13
Yield strength σs≥/MPa: 965
Elongation δ5≥(%): 13
Reduction of area ф ≥ (％): 40
Mechanical properties under VIM + ESR melting
Tensile strength σb≥/MPa: 1450
Yield strength σs≥/MPa: 1380
Elongation δ5≥(%): 9
Yield strength σs≥/MPa: 1380
Elongation δ5≥(%): 9