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H21 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: hot work tool steel
H21 steel product available : H21 Steel plates, H21 steel sheets, H21 round bars, H21 steel strip, H21 steel wire, H21 steel rod
H21 steel standard : ASTM A681,
H21 steel UNS No.: T20821
H21 steel surface usual condition:
-- The hot rolled or forged condition (as hot work)
-- The machined (ground, polished, turned, peeled or milled ) condition
-- The cold reduced condition

ASTM A681 H21 tool steel chemical composition %

UNS

Type

C

Mn

P max

S max

Si

Cr

V

W

Mo

T20821

H21

0.26-0.36

0.15-0.40

0.030

0.030

0.15-0.50

3.00-3.75

0.30-0.60

8.50-10.00

-


ASTM A681 H21 tool steel max Brinell hardness in Annealed or cold drawn condition


UNS

Type

Annealed BHN

Cold drawn BHN

T20821

H21

235

262



Type

Preheat temperature ℃

Austenitizing temperature℃

Austenitizing
(Minutes)

Quench
Medium

Tempering temperature℃

Min Hardness RC

Salt Bath

Controlled Atmosphere Furnaces

H21

788

1177

1191

5-15

Air

552

52


JOIN-WIN STEEL keeps enough quantity H21 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 tool steel in standard ASTM A681
H10 Tool steel,
H11 Tool steel,
H12 Tool steel,
H13 Tool steel,
H14 Tool steel,
H19 Tool steel,
H22 Tool steel,
H23 Tool steel,
H24 Tool steel,
H25 Tool steel,
H26 Tool steel,
H41 Tool steel,
H42 Tool steel,
H43 Tool steel

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