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42CrMo / 4142 SCM440 steel bar stock , hot rolled alloy steel round bar

JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

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Address: NO.288,YOUYI ROAD ,XI SHAN DISTRICT,WUXI CITY,CHINA

Contact name:Gao Ben

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42CrMo / 4142 SCM440 steel bar stock , hot rolled alloy steel round bar

Country/Region china
City & Province wuxi jiangsu
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Product Details

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

GBDINAISIJIS
42CrMo1.7225 4140SCM440

Chemical Composition                                                                                           

CSiMnCr MoPS
0.38-0.430.40max0.60-0.900.90-1.200.15-0.300.0350.035

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 

ForgingHeat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc.
AnnealingHeat to 830°C-850°C.Cool in furnace.
NormalisingHeat to 870°C-900°C.Cool in still air.
Stress RelievingAnnealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air.
HardeningHeat to 830°C-880°C. Quench in oil or polymer.
TemperingHeat 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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