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Cold Rolled Hot Rolled Alloy Steel Sheet Black Surface Grinded Machined For Ship

Cold Rolled Hot Rolled Alloy Steel Sheet Black Surface Grinded Machined For Ship

Brand Name:HDT
Certification:ISO SGS
Model Number:Boiler Alloy Steel Sheet Plate
Minimum Order Quantity:5T
Delivery Time:60-75days
Payment Terms:L/C, T/T, Western Union
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Address: Rm. 1202, Buildiing A, Wanda Plaza, Zhangjiagang, Jiangsu, China
Supplier`s last login times: within 1 hours
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Product Details

Alloy Steel Plate Black Surface / Grinded / Machined for Application of Ship Plate

Product Description


42crmo4/4140/1.7225/scm 440 alloy steel plate

Equivalent Grades


GBDINAISIJIS
42CrMo1.7225 4140SCM440


Characteristics


4140 Alloy Steel/SAE 4140 Steel Price is engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness. High creep strength. Repeated impact resistant capability.

Applications


4140 Alloy Steel/SAE 4140 Steel Price is use to producecomponents with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering .
Chemical Composition

CSiMnCr MoPS
0.38-0.430.40max0.60-0.900.90-1.200.15-0.30≤0.035≤0.035
Available size

Round steel bar 10-800mm
Flat steel bar 10-400mm*200-2200mm
Surface condition

Black surface/ Grinded/ Machined
Hardness


Annealed HBS 217 max

Heat treatment


Forging Heat 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.
China Cold Rolled Hot Rolled Alloy Steel Sheet Black Surface Grinded Machined For Ship supplier

Cold Rolled Hot Rolled Alloy Steel Sheet Black Surface Grinded Machined For Ship

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