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Steel Grade: AISI O6| UNS: T31506

CHEMICAL COMPOSITION(AISI O6):  C(％) :        1.35～1.55 Si(％) :        0.80～1.20 Mn(％) :        0.30～1.00 Cr(％) :        — Mo(％) :        0.20～0.30 V(％) :        — W(％) :        — Other(％) :        —

HARDNESS AND HEAT TREATMENT (AISI O6): Initial Forging Temperature/℃:        1070 Finish Forging Temperature/℃:        820 Annealing/℃:        790 Hardbess HBS|After Annealing :        ＜217 Quenching/℃:        790～840 Quenching Medium :        Oil Tempering/℃:        150～320 Hardbess HBC|After Tempering :        63～58

Remark(AISI O6): 
①, The temperature is after carburization.
②, It is surface hardness after carburization.
③, Aging treatment.
Please find the PDF for AISI O6  

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Introduction Alloy Tool Steel (AISI O6)
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 O6