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| ITEM | Standard Number | Descriptions |
|---|---|---|
| 1 | B 637 (2012) | Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and Forging Stock for Moderate or High Temperature Service |
| Material | Standard | Country |
| 2.4669 | DIN | Germany |
| NiCr15Fe7TiAl | DIN | Germany |
| N07750 | UNS | USA |
| B 637 N07750 Type 1 | ASTM | USA |
| SB-637 N07750 Type 1 | ASME | USA |
| Inconel X750 | SAE | USA |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.08 | |||
| Mn | 1.0 | |||
| Si | 0.5 | |||
| S | 0.01 | |||
| P | 0.015 | |||
| Cu | 0.5 | |||
| Fe | 5.0 | 9.0 | ||
| Co | 1.0 | |||
| Nb | 0.70 | 1.20 | ||
| Cr | 14.0 | 17.0 | ||
| Ni | 70 | |||
| Al | 0.40 | 1.00 | ||
| Ti | 2.25 | 2.75 |
| Tensile strength | 385～656 | σb/MPa |
| Yield Strength | 468 | σ 0.2 ≥/MPa |
| Elongation | 67 | δ5≥(％) |
| ψ | - | ψ≥(％) |
| Akv | - | Akv≥/J |
| HBS | 864～977 | - |
| HRC | 30 | - |
| Thermal expansion | 09-55 | e-6/K |
| Thermal conductivity | 02-10 | W/m.K |
| Specific heat | 450-460 | J/kg.K |
| Melting temperature | 2991-6369 | 째C |
| Density | 2323-7203 | kg/m3 |
| Resistivity | 0.50-0.60 | Ohm.mm2/m |
| Steel Grade | Specification | Processing range(mm) |
| B 637 N07750 Type 2 Superalloys | Round Bar and Hollow Bar | Φ1 to Φ2000 |
| Square and Flat Steel | Φ10 to Φ100 | |
| Plate and Sheet | 0.08-800(Thickness)*10-1500(Width)*Length | |
| Tube or Pipe | OD:Φ4-410; WT:1-35 mm; Lenght:10-12000 | |
| Coil and Strip Steel | THK:0.1mm Width:1500mm | |
| Forged | Ring/Cylindrical/Disk |