ASTM H21 Enquiry | Print this page
| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | H21 | ASTM | USA |
Chemical composition % of the ladle analysis of grade H21
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | V(%) | W(%) |
|---|---|---|---|---|---|---|---|
| 0.26～0.36 | 0.15～0.50 | 0.15～0.40 | ≤0.030 | ≤0.030 | 3.00～3.75 | 0.30～0.60 | 8.50～10.0 |
| 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) |
|---|---|---|---|---|---|---|
| 857 (≥) | 141 (≥) | 21 | 33 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 224 |
| 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 |
|---|---|---|---|---|---|---|---|
| 177 (≥) | 987 (≥) | 33 | 44 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 411 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 362 | 619 | 622 |
| 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 | ASTM | USA | Classification and designation for superalloys and high temperature intermetallic materials |
| GH2132 | ASTM | USA | Classification and designation for superalloys and high temperature intermetallic materials |
| GH2135 | ASTM | USA | Classification and designation for superalloys and high temperature intermetallic materials |
| GH2136 | ASTM | USA | Classification and designation for superalloys and high temperature intermetallic materials |
| 03X21H21M4ΓБ | ASTM | USA | Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition |
| SUH21 | ASTM | USA | CNS standard heat resistant steel plate of the steel grade and chemical composition |
| ISO H21 | ASTM | USA | Nickel and nickel alloy forgings |
| H21 | ASTM | USA | Hot-Work Tool Steel |
| H21 | ASTM | USA | Hot-Work Tool Steel |
