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SAE L7 Details
SAE L7 Standard Download
Category | Type | Grade | Designations |
---|---|---|---|
Grades | Tool Die Steels | L7 | USA - SAE , |
Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
---|---|---|---|---|
C | 0.95 | 1.05 | ||
Si | 0.20 | 0.40 | ||
Mn | 0.25 | 0.45 | ||
Cr | 1.25 | 1.75 | ||
Mo | 0.30 | 0.50 | ||
V | - | - | ||
W | - | - |
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) |
---|---|---|---|---|---|---|
835 (≥) | 977 (≥) | 43 | 11 | 33 | 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 |
---|---|---|---|---|---|---|---|
482 (≥) | 581 (≥) | 32 | 21 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 113 | |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
568 | 829 | 561 |
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 |
---|---|---|---|
EVll | UNS | USA | Steel for exhaust valves |
S63011 | AISI | USA | Steel for exhaust valves |
EVl7 | UNS | USA | Steel for exhaust valves |
HEV2 | UNS | USA | Steel for exhaust valves |
N07002 | AISI | USA | Steel for exhaust valves |
L7 | SAE | USA | Low Alloy Tool Steel |