AFNOR Z20CN21-12Az Enquiry | Print this page
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- » Z20CN21-12Az
Z8CNDT17.13B
A35-586 316F21
Z6CNDNb17.13B
A35-586 316F22
Z6CNT18.12B
A35-586 321F20
Z6CNNb18.12B
A35-586 347F20
Z12CKNDWNb21-20-20
Z12CKNDWNb21-20-20 - AFNOR
- France
- Steel Exhaust Valves
Chemical composition % of the ladle analysis of grade Z20CN21-12Az
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | N(%) |
| 0.15-0.25 | 0.70-1.30 | 1.00-1.50 | Max 0.040 | Max 0.030 | 20.0-22.0 | 10.5-12.5 | 0.15-0.25 |
| 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) |
|---|---|---|---|---|---|---|
| 523 (≥) | 521 (≥) | 11 | 41 | 43 | 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 |
|---|---|---|---|---|---|---|---|
| 135 (≥) | 694 (≥) | 41 | 44 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 232 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 466 | 367 | 566 |
| 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 |
|---|---|---|---|
| Z20CN21-12Az | Valve steels and alloys for internal combustion engines |