USA ASTM 1A Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures and 1A Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Special Alloy | 1A | ASTM | USA | Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures | 
| J02500 | |||||
| J03000 | |||||
| J03001 | |||||
| J03501 | |||||
| J02501 | |||||
| Gr 485 | |||||
| Gr 620 | |||||
| Gr 825 | |||||
| Grade21 | |||||
| Grade31 | 
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) | 
|---|---|---|---|---|---|---|
| 198 (≥) | 989 (≥) | 34 | 34 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 341 | 
| Temperature (°C) | Modulus of elasticity (GPa) | Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) | Specific thermal capacity (J/kg·°C) | Specific electrical resistivity (Ω mm²/m) | Density (kg/dm³) | Poisson’s coefficient, ν | 
|---|---|---|---|---|---|---|---|
| 43 | - | - | 0.14 | - | |||
| 733 | 755 | - | 14.3 | 214 | - | ||
| 986 | - | 14 | 12.2 | 134 | 214 | 
Heat treated : 1359°C - 1887°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| BW1A | UK | Carbon tool steel | |
| BH21A | UK | Carbide for cutting tools | |
| BH21A | UK | Carbide for cutting tools | |
| у11A-1 | ГОСТ | Russia | Carbide for cutting tools | 
| у11A-1 | ГОСТ | Russia | Carbide for cutting tools | 
| у11A-2 | ГОСТ | France | Carbide for cutting tools | 
| у11A-2 | ГОСТ | France | Carbide for cutting tools | 
| у11A-3 | ГОСТ | Russia | Carbide for cutting tools | 
| у11A-3 | ГОСТ | Russia | Carbide for cutting tools | 
| AISI 501A | AISI | USA | Martensitic special steel | 
| Z3CND17-11Az | AFNOR | France | Stainless Steel Plate & Steel Strip | 
| ASTM 1A | AISI | USA | |
| 34MoCr11AT | STAS/SR | Romania | Alloy structural steel | 
| 42MoCr11AT | STAS/SR | Romania | Alloy structural steel | 
| SIVCr11A | STAS/SR | Romania | Alloy structural steel | 
| SUP11A | CNS | China | China Taiwan Structural steel | 
| SBV1A | CNS | China | China Taiwan Structural steel | 
| STKM11A | CNS | China | China Taiwan Structural steel | 
| 0Cr21Al6 | GBT | China | High resistance alloys for electrical heating | 
| 0Cr21Al6Nb | GBT | China | High resistance alloys for electrical heating | 
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