EN26 (826M40) Engineering steel
EN26 (826M40) in round bar hot rolled and heat treated to ‘W’ condition. It is a 2.5% nickel chromium molybdenum high tensile grade with a tensile range of 1075-1225 N/mm².
It is suitable for applications which require higher tensile and yield strength than 817M40 or 826M31 specifications. EN26 (826M40) can be induction or flame hardened and is also suitable for nitriding. It combines with good ductility and resistance to shock.
Due to its high molybdenum content the steel may normally be tempered in the range 300-550C without serious loss of impact values. Good mechanical properties at low temperature can also be obtained.
Steel stock range
High Peak Steels stock EN26 (826M40) in round bar.
Associated standards
UK Standard EN26 | European Grades 34CrNiMo6, 40CrNiMo6 | Werkstoff 1.6745
EN26 (826M40) Black
| Product | Min size | Max size |
|---|---|---|
 | 50mm dia | 250mm dia |
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EN26 (826M40) Chemical Composition
| C | Si | Mn | S | P | Cr | Ni | Mo | |
|---|---|---|---|---|---|---|---|---|
| Min | 0.36 | 0.1 | 0.45 | 0.5 | 2.3 | 0.45 | ||
| Max | 0.44 | 0.35 | 0.7 | 0.04 | 0.035 | 0.8 | 2.8 | 0.65 |
EN26 (826M40) Mechanicals
| Yield N/mm2 | 0.2% proof N/mm2 | UTS (Rm) N/mm2 | Elong (A) % | Red of Area (Z) % | Hardness HB | Impact Test (KV) J |
|
|---|---|---|---|---|---|---|---|
| Quenched & Tempered to condition U (min) | 755 | 925 | 12 | 269 | 42 | ||
| Quenched & Tempered to condition U (max) | 1075 | 331 | |||||
| Quenched & Tempered to condition V (min) | 850 | 1000 | 12 | 293 | 42 | ||
| Quenched & Tempered to condition V (max) | 1150 | 352 | |||||
| Quenched & Tempered to condition W (min) | 940 | 1075 | 11 | 311 | 35 | ||
| Quenched & Tempered to condition W (min) | 1225 | 375 | |||||
| Quenched & Tempered to condition X (max) | 1020 | 1150 | 10 | 363 | 28 | ||
| Quenched & Tempered to condition X (max) | 1300 | 352 | |||||
| Quenched & Tempered to condition Y (max) | 1095 | 1225 | 10 | 363 | 28 | ||
| Quenched & Tempered to condition Y (max) | 1375 | 352 | |||||
| Quenched & Tempered to condition Z (max) | 1235 | 1550 | 7 | 444 | 11 | ||
| Quenched & Tempered to condition Z (max) |
EN26 (826M40) Typical applications
- AUTOMOTIVE PARTS
- HEAVY DUTY GEARS
- AIRCRAFT AND AEROSPACE PARTS
- CRANK AND DIFFERENTIAL SHAFTS
- UNDERCARRIAGES
- HIGH STRENGTH BOLTS
- ELECTRIC MOTOR SHAFTS