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AFNOR X7CrNiAl17-7 Details
AFNOR X7CrNiAl17-7 Standard Download
Category | Type | Grade | Microstructure | Designations |
---|---|---|---|---|
Grades | Stainless Steels | X7CrNiAl17-7 | Precipitation-Hardening | France - AFNOR , NF EN 10088-1 - Stainless steels - Part 1: List of stainless steels NF EN 10088-2 - Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes NF EN 10088-3 - Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes NF EN 10088-4 - Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes NF EN 10088-5 - Stainless steels - Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes NF EN 10151 - Stainless steel strip for springs - Technical delivery conditions NF EN 10270-3 - Steel wire for mechanical springs - Part 3: Stainless spring steel wire |
Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
---|---|---|---|---|
C | - | 0.09 | ||
Si | - | 0.70 | ||
Mn | - | 1.00 | ||
P | - | 0.040 | ||
S | - | 0.015 | ||
Cr | 16.00 | 18.00 | ||
Mo | - | - | ||
Ni | 6.50 | 7.80 | ||
Al | 0.70 | 1.50 |
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) |
---|---|---|---|---|---|---|
735 (≥) | 134 (≥) | 43 | 22 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 224 |
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 |
---|---|---|---|---|---|---|---|
587 (≥) | 126 (≥) | 21 | 44 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 332 | |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
349 | 159 | 919 |
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 |
---|---|---|---|
X7CrNiAl17-7 | B.S. | UK | Steel wire for mechanical springs - Part 3: Stainless spring steel wire |
1.4568 | B.S. | UK | Steel wire for mechanical springs - Part 3: Stainless spring steel wire |
X7CrNiAl17-7 | AFNOR | France | Steel wire for mechanical springs - Part 3: Stainless spring steel wire |
1.4568 | AFNOR | France | Steel wire for mechanical springs - Part 3: Stainless spring steel wire |
X7CrNiAl17-7 | ISO | International | Stainless steels - Chemical composition |