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ASTM A2 Details
ASTM A2 Standard Download
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) |
---|---|---|---|---|---|---|
844 (≥) | 617 (≥) | 31 | 31 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 144 |
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 |
---|---|---|---|---|---|---|---|
191 (≥) | 664 (≥) | 13 | 22 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 133 | |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
719 | 624 | 629 |
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 |