OD350mm Steel Round Bar SAE 4140 SCM440 Hot Rolled Forged
42CrMo SCM440 Forged Steel Round Bar
Gnee is the most acclaimed manufacturer, exporter, distributor and supplier of industrial 42CRMO4 forged alloy steel round bar with required test certificates
42CrMo Forged Round Steel Bars (60MM-800MM)
|
Equal grade |
GB | DIN | ASTM | JIS | BS | NF | |
|
42CrMo |
1.7225 |
4140 |
SCM440 |
708M40 |
42CD4 |
||
|
Chemical Composition (%) |
C | Cr | Si |
Mo |
Mn | P | S |
|
0.38-0.43 |
0.8-1.10 |
0.15-0.35 |
0.15-0.25 |
0.40-0.70 |
≤0.030 | ≤0.030 | |
Product specification
42CrMo Forged Round Steel Bars (60MM-800MM)
a.Specification:80mm up & as client requrement
b. Length:3m-5.8m
c.Technique:Forged
d.smelting processing:EAF+LF+VD
42CrMo / 4142 SCM440 steel bar stock , hot rolled alloy steel round bar
Specifications
42CrMo / 4140 Steel Round Bar
ISO9001 certified
Flexible MOQ
Prompt delivery stock within 7days
MTC DIN10204 3.1/3.2
Equivalent grades
| GB | DIN | AISI | JIS |
| 42CrMo | 1.7225 | 4140 | SCM440 |
Chemical Composition
| C | Si | Mn | Cr | Mo | P | S |
| 0.38-0.43 | 0.40max | 0.60-0.90 | 0.90-1.20 | 0.15-0.30 | ≤0.035 | ≤0.035 |
Available size
| Round steel bar 60-800mm | |||||||||
| Flat steel bar 25-400mm*200-800mm |
Surface condition
| Black surface/ Grinded/ Machined |
Hardness
| Annealed HBS 217 max |
CharacteristicsApplications
| 42CrMo / 4140 Steel Round Bar is used to producecomponents with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering . |
Heat treatment
| Forging | Heat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc. | ||||||||
| Annealing | Heat to 830°C-850°C.Cool in furnace. | ||||||||
| Normalising | Heat to 870°C-900°C.Cool in still air. | ||||||||
| Stress Relieving | Annealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air. | ||||||||
| Hardening | Heat to 830°C-880°C. Quench in oil or polymer. | ||||||||
| Tempering | Heat to 450°C-700°C cool in still air. NB. Tempering within the range 200°C-420°C will result in temper brittleness and should be avoided. | ||||||||
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