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AISI A7

2018-04-17 19:19:08
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Steel Grade: AISI A7| UNS: T30107

CHEMICAL COMPOSITION(AISI A7): 
C(%) :        2.25
Si(%) :        0.20~0.40
Mn(%) :        0.20~0.40
Cr(%) :        5.25
Mo(%) :        1.00
V(%) :        4.75
W(%) :        (1.00)
Other(%) :        —
HARDNESS AND HEAT TREATMENT (AISI A7):
Initial Forging Temperature/℃:        1050~1150
Finish Forging Temperature/℃:        980
Annealing/℃:        870~900
Hardbess HBS|After Annealing :        235~262
Quenching/℃:        950~980
Quenching Medium :        Air
Tempering/℃:        150~540
Hardbess HBC|After Tempering :        67~57
Remark(AISI A7): 
①, The temperature is after carburization.
②, It is surface hardness after carburization.
③, Aging treatment.
Please find the PDF for AISI A7  
Introduction Alloy Tool Steel (AISI A7)
Alloy tool steel, carbon tool steel with Si, Mn, Ni, Cr, Mo, V, W and other alloy elements in order to improve the hardenability and toughness, wear resistance and heat resistance of steel.Add Cr and Mn can improve the hardenability of tool steel, according to the requirements, selectively to join or add other elements (adding amount is generally not more than 5%), that is, to form a series of alloy tool steel.It is mainly used in the manufacture of measuring tools and cutters, shock resistant and cold and hot mould and some special purpose tools.


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616, 440B, 440C, 431, 430FR, 430F, 430, 422, 416, 410, 405,
ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13,  AISI A7

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