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ASTM A2 Details
Cold-Work Tool Steel
ASTM A2 Standard Download
A2 Datasheet
ASTM A2| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Tool Die Steels | A2 | USA - ASTM , |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.95 | 1.05 | ||
| Si | 0.10 | 0.50 | ||
| Mn | 0.40 | 1.00 | ||
| P | - | 0.030 | ||
| S | - | 0.030 | ||
| Cr | 4.75 | 5.50 | ||
| Mo | 0.90 | 1.40 | ||
| V | 0.15 | 0.50 | ||
| W | - | - | ||
| Ni＋Cu | - | 0.75 |
| 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) |
|---|---|---|---|---|---|---|
| 715 (≥) | 965 (≥) | 32 | 43 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 231 |
| 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 |
|---|---|---|---|---|---|---|---|
| 415 (≥) | 577 (≥) | 33 | 11 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 334 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 873 | 469 | 799 |
| 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 |
|---|---|---|---|
| A 268 S40800 | SAE | USA | Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| A 959 S40800 | SAE | USA | Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels |
| S40800 | AISI | USA | Ferritic Chromium Stainless Steel |
| SA-268 S40800 | AMS | USA | Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| NA2 | B.S. | UK | Specification for nickel-copper alloy castings |
| NA20 | B.S. | UK | Specification for nickel and nickel alloys: bar |
| NA21 | B.S. | UK | Specification for nickel and nickel alloys: bar |
| A2 | ISO | International | Stainless steels - Chemical composition |
| A2 | ASTM | USA | Cold-Work Tool Steel |
| IncoloyA-286 | ASTM | USA | Creep resisting steels, nickel and cobalt alloys |
