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UNS HNV3 Details
Steel for intake valves
UNS HNV3 Standard Download
HNV3 Datasheet
UNS HNV3| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Stainless Steels | HNV3 | USA - UNS , |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.40 | 0.50 | ||
| Si | 2.75 | 3.75 | ||
| Mn | - | 0.80 | ||
| P | 0.040 | |||
| S | 0.03 | |||
| Cr | 7.50 | 9.50 | ||
| Ni | - | 0.50 |
| 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) |
|---|---|---|---|---|---|---|
| 437 (≥) | 766 (≥) | 22 | 34 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
| 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 |
|---|---|---|---|---|---|---|---|
| 552 (≥) | 614 (≥) | 14 | 33 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 413 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 422 | 523 | 712 |
| 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 |
|---|---|---|---|
| HNV3 | UNS | USA | Steel for intake valves |
| S65007 | AISI | USA | Steel for intake valves |
| EV5 | UNS | USA | Steel for exhaust valves |
| S63014 | AISI | USA | Steel for exhaust valves |
| EV6 | UNS | USA | Steel for exhaust valves |
| S63015 | AISI | USA | Steel for exhaust valves |