Production Specification:
Forged Steel Round Bar SCM440, SAE 4140, DIN 1.7225, 42CrMo4
1. Dia: 100mm-1000mm
2. Length: 3000mm-12000mm
3. Process: EAF + LF + VD + Forged + Heat Treatment (optional)
4. Delivery condition: Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)
5. Forged ratio: No less than 3: 1
6. Technical Data: According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing
7. Test: Ultrasonic test according to SEP 1921-84 3C/c
8. Material details will be as per agreed technical specifications
9. Certificate of Quality: Issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness), forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.
10. Marking: Heat No. Will be cold stamped and Steel grade, diameter (mm), length (mm), and the manufacturer LOGO and weight (kg) is painted.
Qilu Special Steel Co., Ltd. A sizeable enterprise manufacturing quality special steel and forging, who have the right of self-operation export and import. Our company is located in the Yanzhou Economic Development Zone which is at present one of the high alloy steel and precision forging production bases.
The enterprise has successively been awarded such honorary titles as State large Enterprise, Industries Pacesetter Enterprise of China, the Best Economic Benefit Enterprise in China; Spark Key Enterprise in Shandong Province; High-Tech Enterprises in Shandong Province, AAA-Class Credit Enterprise in Shandong Province.
Our company, covering an area of 450, 000 square meters, boasts a sound technology system of smelting, casting, forging, finish machining and physical-chemical detection system, with ISO9001: 2000, LR, ABS, GL and CCS certificates. We have employed more than 1, 800 people, among which 500 are engineers and technicians with strong force.
Our major equipment consists of two ultra-high-power electric furnaces (50 metric tons), one LF fining furnace (30 metric tons) and one VD fining furnace (30 metric tons), four electroslag furnace (1-10 metric tons), three electro-hydraulic hammer(5 metric tons), and three fast forging machine (8MN, 16MN and 45MN), with annual productivity of near 100 thousand metric tons. Besides, our company introduced from Switzerland the direct reading spectrometer and flaw detector and other inspection equipments, with annual capacity of near 1 million metric tons. Our product range that sell well worldwide composed of quality special steel (including carbon steel, structural alloy steel, dies steel bearing steel, roll steel, and stainless steel), and electroslag steel (mainly includes bearing steel, roll steel, rapid tool steel and so on, about six series). The main size of forgings is 100-1, 200mm, and the maximum unit weight is about 30 metric tons.
| Chinese standard |
American standard |
Germanystandard |
Japanese standard |
| GB/T |
Grade |
ASTM
SAE AISI |
Grade |
DIN |
Grade |
JIS |
Grade |
| 20# |
1020 |
C22 |
S20C |
| 35# |
1035 |
C35 |
S35C |
| 45# |
1045 |
C45 |
S45C |
| 16Mn |
TyPe7 |
S355J2G3 |
SPFC590 |
| 20CrMo |
5150 |
25CrMo4 |
SCM420 |
| 35CrMo |
4137 |
34CrMo4 |
SCM435 |
| 42CrMo |
4140 |
42CrMo4 |
SCM440 |
| 40CrNiMo |
4340 |
34CrNiMo6 |
|
Audited Supplier 
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