2.hot rolled/forged
3.ISO9001:2008 CETI
42Crmo4 Alloy Steel RoundBars / 42Crmo4 Alloy Structure Steel / 4140 RoundBar
1. Chemicalanalysis
Grade | C | Si | Mn | P | S | Cr | Mo |
42CrMo4 | 0.38-0.45 | 0.17-0.37 | 0.40-0.70 | ≤0.035 | ≤0.035 | 0.90-1.20 | 0.15-0.25 |
1.7225 | 0.38-0.45 | ≤0.40 | 0.60-0.90 | ≤0.025 | ≤0.035 | 0.90-1.20 | 0.15-0.30 |
4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.035 | ≤0.040 | 0.80-1.10 | 0.15-0.25 |
2. Compared grades(based onusage)
Chinese | American | German | Swedish | Japanese |
GB | AISI | DIN | ASSAB | JIS |
42CrMo | 4140 | 1.7225 |
| SCM440 |
3. Heat treatment (forreference)
quenching | tempering | tensilestrength | yieldstrength |
850 °c | 560 °c | ≥1080 | ≥930 |
4. Deliverycondition:
Acc.to your request—Standard steel bar(sawing)
——non-standard steel bar(sawing)
orMill deliver condition,without sawing or cutting
Conventional or ESR, hot rolled orforged, black surface or milling
Hardness: annealed toHB≤229
5. Features:
(1)High strength andhardenability.
(2)Good toughness and smalldeformation by quenching.
(3)High creep strength andrupture strength in hightemperatures
(4)Good strength and goodmechanical properties after heat treatment, technology is good,high-yield.
6. Mainapplication
(1)Requirements for themanufacture greater forging compared 35CrMo steel higher strengthand quenched and tempered-section
(2)Using for making the largegear of locomotive, turbocharger drivegear.
(3)Rear axle, by a great loadrod and spring clip
(4)Also can be used for below2000m deep oil drill pipe joints and salvagetools
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