Steel Forgings
1. Steel grades in different standard and Chemical composition
| Steel grades | C | Si | Mn | Cr | Mo | Ni | P | S | V | w |
Carbon Structure Steel | Q235(B)/SS400/S235JR/A36 | ≤ 0.20 | ≤0.35 | ≤1.4 | 0.3-0.4 |
| ≤0.30 | ≤ 0.045 | ≤ 0.045 |
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20#/CK22, CK20/1020/050A20/S20C | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.3-0.4 |
| ≤0.30 | ≤ 0.035 | ≤ 0.035 |
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45#/CK45, C45/1045/080M46/S45C | 0.42-0.5 | 0.17-0..37 | 0.5-0.8 | 0.3-0.4 |
| ≤0.30 | ≤ 0.035 | ≤ 0.035 |
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Alloy Structure Steel | 20Cr/20Cr4/5120/527A19/SCr420H | 0.18-0.24 | 0.17-0.37 | 0.50-0.80 | 0.70-1.00 | ≤0.15 | ≤0.30 | ≤ 0.035 | ≤ 0.035 |
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40Cr/41Cr4/5140/520M40/SCr440 | 0.37-0.44 | 0.17-0.37 | 0.5-0.8 | 0.8-1.1 | ≤0.15 | ≤0.30 | ≤ 0.035 | ≤ 0.035 |
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30CrMo/4130/1717COS110/SCM420 | 0.26-0.34 | 0.17-0.37 | 0.4-0.7 | 0.8-1.1 | 0.15-0.25 | ≤0.30 | ≤ 0.035 | ≤ 0.035 |
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35CrMo/34CrMo4/4135/708A37 | 0.32-0.40 | 0.17-0.37 | 0.4-0.7 | 0.8-1.1 | 0.15-0.25 | ≤0.30 | ≤ 0.035 | ≤ 0.035 |
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2. Mechanical property:
Name | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | AKV (J) | Reduction of Area (%) |
|
| min | min | min | min | min |
Q235(B)/SS400/S235JR/ A36 | 410 | 235 | 25 |
| 55 |
20#/CK22, CK20/1020/ 050A20/S20C | 410 | 245 | 25 |
| 55 |
45#/CK45, C45/1045/080M46/S45C | 600 | 355 | 16 | 39 | 40 |
20Cr/20Cr4/5120/527A19/SCr420H | 410 | 245 | 25 |
| 55 |
40Cr/41Cr4/5140/520M40/SCr440 | 980 | 785 | 9 | 47 | 45 |
30CrMo/4130/1717COS110/SCM420 | 930 | 785 | 12 | 63 | 50 |
35CrMo/34CrMo4/4135/708A37 | 980 | 835 | 12 | 63 | 45 |
42CrMo/42CrMo4/4140/708A42/708M40 | 1080 | 930 | 12 | 63 | 45 |
40CrNiMoA/40CrNiMo22/4340/871M40/SNCM439 | 980 | 835 | 12 | 78 | 55 |
65Mn/65/1566/ | 735 | 430 | 9 |
| 30 |
55Si2Mn/55Si7/9255/250A53/SUP6 | 1274 | 1176 | 6 |
| 30 |
60Si2MnA/65Si7/9260/250A61/SUP7 | 1570 | 1375 | 5 |
| 20 |
9260H |
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50CrVA/50CrVA/6150/735A50/SUP10 | 1280 | 1130 | 10 |
| 40 |
GCr15/100Cr6/E52100/534A99/SUJ2 |
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52100 |
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SAE 8620H | 980 | 785 | 9 | 47 | 40 |
3. Production Line:
EAF(EBT) → LF → VD → IC → ESR → AOD → Forging →NDT → Rough Machining → NDT → Heat Treatment → NDT → Finish Machining→Consignment
4. Further Processing:
Surface Treatment: Peeling, Turning, Grinding, Milling, Drilling, Boring
Heat Treatment: Normalizing, Annealing, Quenching+ Tempering
5. Quality Control: UT tested, Sep1921, Class C/c and D/d
6. Products and Dimensions
7. Advantages:
* Reduced chance of void
* Better fatigue resistance
* Improved microstructure
* Continuous grain flow
* Finer grain size
* Greater Strength
8. Application:
* Roller for Metallurgy
* forgings for shipping
* forgings for power station
* High Pressure boiler Tube
* Forgings for Corrugated Roller
* Drill Collars
* Elevator and Slip Recesses
* Heavy Weight Drill Pipe/Kelly
* lifting Subs/Drill String Cross-over Sub
* Stabilizer/Intergral spiral Blade Stabilizer/WZ Type Integral Blade Stabilizer/Three Roller Stabilizer/Non-magnetic Stabilizer
* Mandrel Bar
* Pipe Mould
* Wind Turbine Shaft
9. Equipment:
Steel Making System
* 40t VD/VOD Furnace
* 40t LF Furnace Melting
* High Power 40t EBT EAF
* 50T Vacuum Casting
* 8t AOD Furnace/*20t ESR Furnace Melting
Qingdao Helio Steel Co., Ltd. Was established in March19, 2012. Our company's business staff members possess professional service capabilities of steel products, with more than a decade of experience on steel production, technology development, product sales and foreign trade. We comply the principle of friendly cooperation and mutual benefit, and persist in developing together with new and old customers.
Our company is located in Qingdao, a coastal city of Shandong Province, which is near Laiwu Steel Group. Only Laiwu City has steel production capacity of 20 million tons each year. Meanwhile, it is also the largest production base of powder metallurgy products in the whole country. Otherwise, there are more than ten well-known steel manufacturers within the province and the surrounding areas, so steel resources here is abundant and we can meet customers' various requirements.
Our company is mainly engaged in steel products for various specifications and materials, such as continuous casting billets, continuous casting tubes, hot-rolled bars, tubes, hot-rolled square steel, flat steel, H section steel, hot-rolled coils, cold-roll large-size panels, forging materials, and forgings.
We also run the import and export of steel products, based on the needs of customers at home and abroad to develop a variety of special steel products and timely delivery. I hope to sincerely cooperate with domestic and foreign customers, providing high-quality and low-priced products and professional services.