UNS HEV7 Enquiry | Print this page
UNS HEV7 Details
Steel for exhaust valves
UNS HEV7 Standard Download
| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Stainless Steels | HEV7 | USA - UNS , |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.08 | ||
| Si | - | 0.70 | ||
| Mn | - | 1.50 | ||
| P | - | - | ||
| S | - | - | ||
| Cr | - | 14.75 | ||
| Ni | - | 26.0 | ||
| Mo | - | 1.25 |
| 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) |
|---|---|---|---|---|---|---|
| 793 (≥) | 666 (≥) | 43 | 11 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 124 |
| 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 |
|---|---|---|---|---|---|---|---|
| 525 (≥) | 234 (≥) | 31 | 24 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 122 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 773 | 821 | 185 |
| 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 |
|---|---|---|---|
| HEV7 | UNS | USA | Steel for exhaust valves |
| A 959 S66286 | SAE | USA | Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels |
| S66286 | AISI | USA | Iron Base Superalloy |
| IncoloyA-286 | ASTM | USA | Creep resisting steels, nickel and cobalt alloys |
Relevant products
HEV7 Equivalent Grade Stock
| Steel grade | Dimension | Shape | Unit | Quantity | Delivery state | Query |
|---|---|---|---|---|---|---|
| IncoloyA-286 / GH 2132 Stock | Φ8-65mm*L | Round Bar | Kgs | 489 | Hot-Rolled+Annealed+black | Enquiry |