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AFNOR 19MnB4 Details
AFNOR 19MnB4 Standard Download
19MnB4 Application:Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Stainless Steels | 19MnB4 | France - AFNOR , NF EN 10269 - Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties |
Chemical composition(wt.%) of 19MnB4 grade: NF EN 10269
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.17 | 0.24 | ||
| Si | - | 0.40 | ||
| Mn | 0.80 | 1.15 | ||
| P | - | 0.035 | ||
| S | - | 0.035 | ||
| Cr | - | - | ||
| Ni | - | - | ||
| Mo | - | - | ||
| Al | - | 0.020 | ||
| B | 0.0008 | 0.0050 |
Mechanical properties of grade 19MnB4 NF EN 10269
| 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) |
|---|---|---|---|---|---|---|
| 479 (≥) | 189 (≥) | 31 | 41 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 111 |
Physical properties of grade 19MnB4 NF EN 10269
| 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 |
|---|---|---|---|---|---|---|---|
| 699 (≥) | 116 (≥) | 33 | 12 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 343 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 857 | 878 | 747 |
19MnB4 - Form of Supply
| 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 |
Cross Reference Table(Equivalent Grade)
| Grade | Standard | Country | Application |
|---|---|---|---|
| 19MnB4 | AFNOR | France | Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties |
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