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SAE H21 Details
SAE H21 Standard Download
Category | Type | Grade | Designations |
---|---|---|---|
Grades | Tool Die Steels | H21 | USA - SAE , |
Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
---|---|---|---|---|
C | 0.30 | 0.40 | ||
Si | 0.15 | 0.30 | ||
Mn | 0.20 | 0.40 | ||
Cr | 3.00 | 3.75 | ||
Mo | - | - | ||
V | 0.30 | 0.50 | ||
W | 8.75 | 10.00 |
Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
---|---|---|---|---|---|---|
831 (≥) | 236 (≥) | 31 | 11 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 432 |
Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
---|---|---|---|---|---|---|---|
445 (≥) | 616 (≥) | 22 | 24 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 244 | |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
519 | 837 | 547 |
Product type | Products | Dimension | Processes | Deliver Status |
---|---|---|---|---|
Plates / Sheets | Plates / Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
Coil / Strip | Steel Coil /Steel Strip | 0.03-16.0x1200mm | Cold-Rolled & Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
Pipes / Tubes | Seamless Pipes/Tubes, Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging, Q+T, ACID-WASHED |
Grade | Standard | Country | Application |
---|---|---|---|
GH2130 | GB | China | Classification and designation for superalloys and high temperature intermetallic materials |
GH2132 | GB | China | Classification and designation for superalloys and high temperature intermetallic materials |
GH2135 | GB | China | Classification and designation for superalloys and high temperature intermetallic materials |
GH2136 | GB | China | Classification and designation for superalloys and high temperature intermetallic materials |
03X21H21M4ΓБ | GOST | Russia | Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition |
SUH21 | CNS | China | CNS standard heat resistant steel plate of the steel grade and chemical composition |
ISO H21 | ISO | International | Nickel and nickel alloy forgings |
H21 | ASTM | USA | Hot-Work Tool Steel |
H21 | SAE | USA | Hot-Work Tool Steel |