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O2 Tool steel

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Tool Steel: Special steel suitable for working or processing of material, for handling and measuring workpieces and, for this purpose, exhibiting high hardness and wear resistance and/or toughness.
Product: cold work tool steel
O2 steel product available : O2 Steel plates, O2 steel sheets, O2 round bars, O2 steel strip, O2 steel wire, O2 steel rod
O2 steel standard : ASTM A681,
O2 steel UNS No.: T31502
O2 steel surface usual condition:
-- The hot rolled or forged condition (as cold work)
-- The machined (ground, polished, turned, peeled or milled ) condition
-- The cold reduced condition

ASTM A681 O2 tool steel chemical composition %

UNS

Type

C

Mn

P max

S max

Si

Cr

V

W

Mo

T31502

O2

0.85-0.95

1.40-1.80

0.030

0.030

0.50 max

0.50 max

0.30 max

-

0.50 max


ASTM A681 O2 tool steel max Brinell hardness in Annealed or cold drawn condition


UNS

Type

Annealed BHN

Cold drawn BHN

T31502

O2

212

241



Type

Preheat temperature ℃

Austenitizing temperature℃

Austenitizing
(Minutes)

Quench
Medium

Tempering temperature℃

Min Hardness RC

Salt Bath

Controlled Atmosphere Furnaces

O2

649

788

802

5-15

Oil

204

59


JOIN-WIN STEEL keeps enough quantity O2 steel in stock each month. We can meet our customer’s further process request like : rolling, bending, cutting ( any size and any shape ) drilling, welding, milling, machining and steel structure.

Other steel grades of cold work tool steel in standard ASTM A681
O1 tool steel,
O6 tool steel,
O7 tool steel,

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