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Steel Grade: AISI A3| UNS: T30103

CHEMICAL COMPOSITION(AISI A3):  C(％) :        1.25 Si(％) :        0.20～0.40 Mn(％) :        0.20～0.40 Cr(％) :        5.00 Mo(％) :        1.00 V(％) :        1.00 W(％) :        — Other(％) :        —

HARDNESS AND HEAT TREATMENT (AISI A3): Initial Forging Temperature/℃:        — Finish Forging Temperature/℃:        — Annealing/℃:        — Hardbess HBS|After Annealing :        — Quenching/℃:        — Quenching Medium :        — Tempering/℃:        — Hardbess HBC|After Tempering :        —

Remark(AISI A3): 
①, The temperature is after carburization.
②, It is surface hardness after carburization.
③, Aging treatment.
Please find the PDF for AISI A3  

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Introduction Alloy Tool Steel (AISI A3)
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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ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13,  AISI A3