H21 Steel | 1.2343 | 4Cr5MoSiV | SKD6 | 35CrMoV5 Hot Work Tool Steel

H21 steel is a hot sham W-Cr-Mo Tungsten hot take steps steel partner ASTM A681-1999 Steel Grade suitable. H21 Special Steel China Supplier and factory SAE Special Steel Supply H21 Tool steel in Round bar, Plate, Flat bar, Square, Forging Ring and others any swap. And have the funds for choking, sawing, milled, machining paperwork.

Supply Form of H21 Steel -ASTM A681 Hot Work Tool Steel
Supply Range of SAE H21 Steel

 

H21 Steel Round Bar: diameter 5mm – 400mm

H21 Steel Plate: thickness 10 –500mm x width 200– 1400mm

H21 Steel Block: 210mm x 500-810mm

SAE H21 steel material

 

Chemical Composition of SAE H21 Tool Steel Material
ASTM A681 C Si Mn P S Cr W V
H21/T20821 0.26～0.36 0.15～0.50 0.15～0.40 0.030 Max 0.030 Max 3.00～3.75 8.50～10.0 0.30～0.60
DIN 17350 C Si Mn P S Cr W V
1.2581/ X30WCrV9-3 0.25～0.35 0.15～0.30 0.20～0.40 0.035 Max 0.035 Max 2.50～2.80 8.00～9.00 0.30～0.40
GB/T 1299 C Si Mn P S Cr W V
3Cr2W8V 0.30～0.40 ≤0.40 ≤0.40 0.030 Max 0.030 Max 2.20～2.70 7.50～9.00 0.20～0.50
JIS G4404 C Si Mn P S Cr W V
SKD5 0.25～0.35 0.10～0.40 0.15～0.45 0.030 Max 0.020 Max 2.50～3.20 8.50～9.50 0.30～0.50

 

 H21 tool Steel Equivalent and Related Speciation
USA German Japan China ISO
ASTM A681 DIN 17350 JIS G4404 GB/T 1299 ISO 4957
H21 1.2581 SKD5 3Cr2W8V 30WCrV9

 

SAE H21 Tool Steel Material Mechanical Properties

Shear modulus: 80.0 GPa Metric； Bulk modulus: 140 GPa Metric； Hardness, Rockwell C: 40-55 HRc

 hot work H21 Steel material metal forged

Heat to 1150 C, save ample period, subsequently begin foring, considering under 900C no forging. Finished forging slowly frosty.

Heat Treatment of SAE/AISI H21 -Steel

 

  • H21 Tool Steel Annealing

 

Heat to 885C, later cool in heat treatment at not quite 4C per hour. After annealing Hardness 235 HBS Max.

 

  • H21 tool Steel Hardening and Quenching 

Quenching | salt bath furnace: 1177 / ℃

Quenching | controlled atmosphere furnace: 1191 / ℃

Heat preservation time: 5 ~ 15 mins

Quenching medium: air cooling

  • Tempering Of H21 Tool Steel

Tempering temperature / ℃ : 552

After tempering hardness HRC or higher: 52

Application of Sae H21 Steel Material

H21 steel is a Mo content increased by 2%, take possession of to colleague the Mn content, enlarged the high temperature mechanical properties of steel, to run abandoned to the demands of the gathering production of aluminum alloy die-casting mould. The steel has high adaptableness, high heat stability, pleasurable resistance to wear and process play a role, the operational temperature of 650 .

Quality Assured of Sae H21 Tool Steel

Quality assured by Our ISO 9001:2008 environment government system. Our all H21 tool steel all had by SEP 1921-84 ultrasonic inspection (UT Test). Quality Grade: E/e, D/d, C/c.

 

If you have any H21 steel inquiry and question for Price, Application, hot treatment, please don’t hesitate contact us.