Used for gears, pinions, lay shafts, cam shafts, mining haulage, cage suspension and lifting gear, where direct hardening is preferred.
EN-36C Nickel-chromium case hardening steel
Gears, pinions, lay shafts, cam shafts, mining haulage, cage suspension and lifting gears. An alternative to EN-35 and EN-36A.
Typical analysis, %
| C % | Si % | Mn % | Cr % | Mo % | Ni % | P % | S % |
|---|
| 0.12-0.18 | 0.10-0.35 | 0.30-0.60 | 0.60-1.10 | 0.10-0.25 | 3.00-3.75 | 0.035 max | 0.035 max |
Heat treatment and processing
| Forging °C | Normalising °C | Annealing °C | Hardening °C | Quench | Tempering °C | Hardness |
|---|
| 1100-850 | 880-930 | 620-670 | 850-880 / 760-780 | Oil | 170-210 | BHN 220 |
Equivalent grades
| BS 970 (1970-72) | BS 970-1955 | DIN |
|---|
| 665M13 | En 36A | 22NiCr14 |
20MnCr5 Manganese-chromium case hardening steel
Gears, pinions, lay shafts, camshafts, mining haulage, cage suspension and lifting gears.
Typical analysis, %
| C % | Si % | Mn % | Cr % |
|---|
| 0.2 | 0.3 | 1.2 | 1.1 |
Equivalent grades
SAE 8620 Nickel-chromium-molybdenum case hardening steel
Gears, pinions, lay shafts, cam shafts and lifting gears; an alternative to EN-35 and EN-36A.
Typical analysis, %
| C % | Si % | Mn % | Cr % | Mo % | Ni % | P % | S % |
|---|
| 0.18-0.23 | 0.15-0.35 | 0.70-0.90 | 0.40-0.60 | 0.15-0.25 | 0.40-0.70 | 0.035 max | 0.035 max |
Heat treatment and processing
| Forging °C | Normalising °C | Hardening °C | Quench | Tempering °C |
|---|
| 900-1150 | 880-930 | 780-820 | Oil or air | 150-200 |
Equivalent grades
| BS 970 (1970-72) | BS 970-1955 | AISI/SAE |
|---|
| 805M20 | En 362 | 8620 |
EN-353 Nickel-chromium-molybdenum case hardening steel
Supplied with test certificates in bulk or retail quantity.
Typical analysis, %
| C % | Si % | Mn % | Cr % | Mo % | Ni % | P % | S % |
|---|
| 0.20 max | 0.35 max | 0.50-1.00 | 0.75-1.25 | 0.08-0.15 | 1.0-1.5 | 0.05 max | 0.05 max |
Equivalent grades
| BS 970 (1970-72) | BS 970-1955 |
|---|
| 815M17 | En 353 |
Values are typical. Request the mill test certificate with your order.
