Huangshi Xiri Trading Co., Ltd.

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Hot work tool steel-H21

Equivalent grades GB  DIN  AISI  JIS  -
3Cr2W8V 1.2581 H21 SKD5 -
Chemical Composition C Si Mn Cr P S V W - -
0.26-0.36 0.15-0.50 0.15-0.40 3.0-3.75 ≤0.03 ≤0.02 0.30-0.60 8.50-10.00 - -
Available size Round Bar Diameter Length
16-800mm 2000-6000mm
Flat Bar Thickness Width Length
16-400mm 100-800mm 2000-6000mm
Surface condition Black surface/ Grinded/ Machined
Annealed hardness HB240MAX
Characteristics Dry hardening,have upper hot intensity and rigidity, under middle  pemperature
Good tenacity, hot tirdness nature and definite wearable empty quench under lower
Ao shi ti temperature condition, small distortion after heat treatment 
Applications  High stessed hot work tools,such as mandrels,dies and containers for metal tube
and rod extrusion,hot extrusion tools,tools for manufacture of hollows,screws,
rivets,nuts and bolts.die casting tools,forming dies,die inserts,hot shear blades
Heat treatment Annealing hardness: ≤241 HB;
Heat treatment temperatu
Hardening: 1070÷1150°C
Tempering: 200°C
Tempering hardness: 53 HRC

Hot work tool steel-H21
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