S42026, 1.4031 knife steel strip
S42026, 1.4031 is a martensitic stainless steel alloyed with molybdenum that is characterized by good formability. After hardening, the grade has:
Very good corrosion resistance
High toughness
Excellent fatigue strength
S42026, 1.4031 is typically used for cutters in electric shavers and springs.
Standards
- UNS: S42026
- EN Number: (1.4031)*
*) Nearest equivalent grade
Chemical composition (nominal)
Chemical composition (nominal) %
| C | Si | Mn | P | S | Cr | Mo |
| 0.38 | 0.4 | 0.6 | ≤0.025 | ≤0.010 | 13.5 | 1.0 |
Forms of supply
Strip can be supplied either in coils or as straightened lengths of 0.5 – 4.0 meters (1.6 – 13.1 feet). The coil weight is max. 5 kg/mm (280 lbs/in.) of strip width.
Hardening and tempering of the strip steel is needed to achieve the correct finish and to meet the properties required by the end-user.
Dimensions
| Thickness | Width | ||
| mm (in.) | mm (in.) | ||
| Min. | Max | Min. | Max. |
| 0.10 (0.0039) | 4.5 (0.177) | 5 (0.197) | 350 (13.78) |
Other sizes can be supplied to meet specific requirements.
Tolerances
The thickness and width tolerances are +/- tolerances to the nominal size. The normal tolerance classes for most of our strip products are T2 and B1. Tighter tolerances as well as other tolerance limits can be offered upon request.
Mechanical properties
| As-delivered | Tensile strength | Hardness | |
| MPa (ksi) | HV | HRB | |
| Annealed | max. 700 (102) | max. 215 | max. 94.3 |
| Cold rolled | 850-1000 (123-145) | 265-315 | 101.4-106.6 |
Physical properties
The physical properties of a steel are related to a number of factors, including alloying elements, heat treatment and manufacturing route, but the data presented below can generally be used for rough calculations.
| Density | |
| g/cm3 | 7.7 |
| lb/in.3 | 0.28 |
Heat treatment
Hardening data
Hardening temperature 1030°C (1885°F), strip thickness 3.5 mm (0.138 in.), holding time 6 minutes, quenching in oil.
Tempering data
Tempering time 30 minutes.
