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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
O7 steel product available : O7 Steel plates, O7 steel sheets, O7 round bars, O7 steel strip, O7 steel wire, O7 steel rod
O7 steel standard : ASTM A681,
O7 steel UNS No.: T31507
O7 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 O7 tool steel chemical composition %
UNS |
Type |
C |
Mn |
P max |
S max |
Si |
Cr |
V |
W |
Mo |
T31507 |
O7 |
1.10-1.30 |
0.20-1.00 |
0.030 |
0.030 |
0.10-0.60 |
0.35-0.85 |
0.15-0.40 |
1.00-2.00 |
0.30 max |
ASTM A681 O7 tool steel max Brinell hardness in Annealed or cold drawn condition
UNS |
Type |
Annealed BHN |
Cold drawn BHN |
T31507 |
O7 |
241 |
255 |
Type |
Preheat temperature ℃ |
Austenitizing temperature℃ |
Austenitizing |
Quench |
Tempering temperature℃ |
Min Hardness RC |
|||
Salt Bath |
Controlled Atmosphere Furnaces |
||||||||
O7 |
649 |
857 |
871 |
5-15 |
Oil |
204 |
62 |
JOIN-WIN STEEL keeps enough quantity O7 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,
O2 tool steel,
O6 tool steel