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Product Details:
Payment & Shipping Terms:
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| Standard: | AISI,DIN,ASTM,GB | Surface: | Machined,black,Plain,mill Finish Or Peeled Finish,Grinding |
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| Technique: | Forged,Hot Rolled,Hot Work Mould Steel | Test: | SGS / Ut 100% / Element Testing |
| Delivery Condition: | Hot Rolled, Forged | Ut Standard: | Sep 1921-84 Class 3 C/C To D/D |
| Sample: | Free | Heat Treatment: | Annealing/Q+T |
| Hs Code: | 722540 & 722830 | ||
| High Light: | forging tool steel,alloy tool steel |
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Ultra-high Strength Mechanical Alloy Steel Round & Rod 1.7225 SAE4140 SCM440
SAE 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength.
Chemical Composition(%)
| C | Si | Mn | Cr | Mo | P | S | Ni |
| 0.38~0.45 | 0.17~0.37 | 0.60~0.90 | 0.90~1.20 | 0.15-0.25 | ≤0.018 | ≤0.030 | ≤0.012 |
Equivalent grades:
| GB(China) | DIN(German) | AISI(USA) | JIS(Japan) |
| 42CrMo | 1.7225 | SAE4140 | SCM440 |
| Quenching | Tempering | ||||
| Heating temperature/ºC | Cooling way | Hardness (HRC) | Tempering temperature/ºC | Cooling way | Hardness(HRC) |
| 850-880 | |||||
| Oil Cooling | 50-52 | 450-650 | Air | 25-40 | |
4,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)
5,Ready Stock:
Round Bar diameter 14-460mm.All the sizes as require can be customerized as fresh production with MOQ.
6,Delivery state:
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.
7, 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.
| STANDARD/GRADE of steel | Flat Bar Size(mm) | Round bar Size(mm) | Technics | ||||||
| DIN | AISM | JIS | GB(China) | Thickness | Width | Length | Diameter | Length | |
| 1.121 | SAE1050 | S50C | 50# | 10-450 | 155-2200 | 2000-12000 | Forged, Hot Rolled | ||
| 1.2311 | P20 | PDS-3 | 3Cr2Mo | 10-460 | 155-2200 | 2000-10000 | 20-200 | 2000-6000 | |
| 1.2738 | P20+Ni | - | 3Cr2NiMnMo | 21-300 | 155-2200 | 2000-8000 | 20-200 | 2000-6000 | |
| 1.2379 | D2 | SKD10 | SKD10 | 10-200 | 155-810 | 2000-6000 | 14-80 | 3000-6000 | |
| 1.2080 | D3 | SKD1 | 3Cr2Mo | 10-200 | 155-810 | 2000-6000 | 20-200 | 3000-6000 | |
| 1.2083 | 420 | - | 4Cr13 | 10-500 | 155-1200 | 2000-6000 | 12-300 | 3000-6000 | |
| 1.2344 | H13 | SKD61 | 4Cr5MoSiV1 | 10-500 | 155-1600 | 2000-6000 | 16-400 | 3000-6000 | |
| 1.2510 | O1 | SKS3 | 9CrWMn | 10-200 | 155-810 | 2000-6000 | 20-200 | 3000-6000 | |
| 1.7225 | SAE4140 | SCM440 | 42CrMo | 10-280 | 155-2200 | 2000-6000 | 16-450 | 3000-6000 | |
About Us
Guangzhou Changfeng Steel Co., Ltd. is a professional special steel company, which specializing in this line in China since 2005. Our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.
To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel and Daye Special Steel.
Contact Person: Echo
Tel: +86 18148729336
Fax: +86-020-8251-5866
