ASTM A681 O2 Tool Steel

ASTM A681 O2 steel is a low alloy tool steel, cold work tool steel. It must be hardened by quenching in oil. The UNS number of O2 material is T31502. O2 tool steel is a general purpose oil hardening tool steel with easy machinability and good dimensional stability in heat treatment.
ASTM A681 specification covers the chemical, mechanical, and physical requirements for available wrought alloy tool steel products, which include hot or cold finished steel bar, steel plate, steel sheet, strip, rod, wire, or forgings etc. O2 low alloy tool steel is a general-purpose tool steel that is typically used in applications where alloy steels cannot provide sufficient hardness, strength, and wear resistance.

ASTM A681 O2 Tool Steel Chemical Requirement, %

C	Mn	P	S	Si	Cr	V	Mo
0.85-0.95	1.40-1.80	≤0.030	≤0.030	≤0.50	≤0.50	≤0.30	≤0.30

ASTM A681 O2 Steel Equivalent

ASTM A681	DIN EN ISO 4957	JIS	GB/T 1299
O2 / T31502	1.2842 / 90MnCrV8	SKS93	9Mn2V

Maximum Brinell Hardness in Annealed or Cold-Drawn Condition

Type	Annealed BHN	Cold drawn BHN
O2	217	241

Application of ASTM A681 O2 Tool Steel

ASTM A681 O2 oil quenching tool steels are used for long run tooling applications, where wear resistance is important, such as blanking or forming dies and thread rolling dies. A681 O2 tool steel can apply to Punching die, molding die, stamping die, blades, heading tools, long punch, forming roller, grinding roll, master the tools, ball, punch, perplexing extrusion die, drawing die, compound die, thread rolling die, Shear Blades.
Shanghai Katalor is a China supplier of ASTM A681 O2 cold work tool steel products. We can provide ASTM A681 O2 tool steel, O2 low alloy steel, ASTM O2 round bars, A681 O2 steel flats with high quality. Welcome to come and visit our factory if you are interested in O2 oil quenching tool steel.