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Annealing Hot Rolled Steel Bar Tensile Strength ≥1080MPa For Mechanical SAE4140

Guangzhou Changfeng Steel Co., LTD

Annealing Hot Rolled Steel Bar Tensile Strength ≥1080MPa For Mechanical SAE4140

Brand Name : CF

Model Number : 1.7225 / SCM440 / SAE4140

Certification : ISO / Mill Certificate

Place of Origin : China

MOQ : Negotiable

Price : Negotiable

Payment Terms : L/C, T/T

Supply Ability : 1000 tons/ month

Delivery Time : 15-20 days

Packaging Details : for Customers' Request

Technology : Hot Rolled / Forged / Clod Drawn

Production Route : Ef / Eaf+Lf+Vd / ESR

Heat Treatment : Annealing / Q+T

Test : SGS / Ut100% / Elements Testing

Shape : Round Bar or Flat Bar

Diameter : 35-260mm

Length : 3000-6000mm

Payment : 30% Deposit,Blance by L/C at Sight or T/T

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1.7225 / SCM440 / SAE4140 Hot Rolled Alloy Steel Round Bar for Mechanical


1, Equivalent grades:

GB(China)DIN(German)AISI(USA)JIS(Japan)
42CrMo1.7225SAE4140SCM440


2, Perform Standard: GB/T 3077-1999

CSiMnCrMoPSNi
0.38~0.450.17~0.370.60~0.900.90~1.200.15-0.25≤0.018≤0.030≤0.012


3, Available size(mm)

Flat Bar Size(mm)Round bar Size(mm)
ThicknessWidthLengthDiameterLength
10-200155-22002000-600035-2603000-6000


Listed specifications are only typical grades; products of required specifications can be developed/produced per international, Chinese or industry standards, or based on agreements with customers.

4, Application:
It used for section large forgings, such as locomotive traction gears, with supercharger drive gear,
the rear axle, the connecting rod and the spring load greatly clip,oil drill pipe joints and fishing tools,etc.


5, Mechanical Properties:
Tensile strength:σb (MPa):≥1080(110)
Yield strength:σs (MPa):≥930(95)
Elongation:δ5 (%):≥12
Section shrinkage:ψ (%):≥45
Impact work:Akv (J):≥63
Impact toughness value:αkv (J/cm²):≥78(8)


6, Heat treatment:

QuenchingTempering
Heating temperature/℃Cooling wayHardness (HRC)Tempering
temperature/ºC
Cooling wayHardness
(HRC)
840-880Oil Cooling≥53450-650Air cooling25-40


7, Feature:
1) Weldability suffers with increasing chromium content;
2) High temperature strength and high pressure hydrogenation properties are promoted by chromium and molybdenum;
3) Molybdenum significantly reduces temper brittleness;
4) Chromium renders steel oil hardenable and increase hardenability;
5) Chromium molybdenum high tensile steel with yield strength of 550N/mm2;


8, Ready Stock:
Round Bar diameter 35-260mm.All the sizes as require can be customerized as fresh production with MOQ.

9, Delivery state:
Hot rolled, black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.


10, Delivery time:
For abundant stock, 15-20 days.For customized products, 30-50 days.
We have full set of equipement (sawing machine/grinding/polishing machine) to make customer's specification.


11, Our service:

1) Sizes, materials and others are all at your requirements and can be changed;
2) Price varies on materials, dimensions, finish craft and different payments;
3) We are direct manufacture in machinery manufacturing work with experience of several decades;
4) Detail production design will be made according to information you offered;
5) We have adequate inventory, so that we can quick delivery;
6) The most important is that we have advanced equipment.
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Annealing Hot Rolled Steel Bar Tensile Strength ≥1080MPa For Mechanical SAE4140
Annealing Hot Rolled Steel Bar Tensile Strength ≥1080MPa For Mechanical SAE4140



















































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