Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of dual phase steel for automotive in China. Welcome to wholesale customized dual phase steel for automotive at low price from our factory. If you have any enquiry about free sample and cheap products, please feel free to email us.
Duplex steel
Performance characteristics: The stress-strain curve presents a smooth arch, continuous yield, no yield extension, and no room temperature aging; high work hardening rate, especially in the low strain zone (2-3%), and the yield strength increases rapidly (140-140 220MPa); low yield ratio (0.5-0.65); high uniform elongation and total elongation; high bake hardening value (35-80MPa); good collision energy absorption performance.
The dual-phase (DP) steel used in automobiles has a harder martensite phase dispersed on a pure ferrite matrix. The martensite plays a role in improving the strength, while the ferrite keeps the material in good condition. of plasticity.
Dual-phase steel is a new type of high-strength steel based on phase change. In terms of microstructure, dual-phase steel is composed of soft ferrite and hard phase martensite. In terms of mechanical properties, it has the characteristics of high strength, work hardening index and low yield-strength ratio. Dual-phase steel can be used in a variety of automotive structural parts, including body structural parts - stamping parts with complex structures and non-body structural parts - mainly including suspension parts, chassis and wheels.
duplex stainless steel grades
| Chemical composition %by mass | ||||||||||
| Steel grade | C | Si | Mn | P | S | Al | Cr + Mo | Nb+Ti | V | B |
| Steel name | max. | max. | max. | max. | max. | max. | max. | max. | max. | |
| dual-phase steels (X) | ||||||||||
| HCT450X+ZF | 0,14 | 0,75 | 2,00 | 0,080 | 0,015 | 0,015 t0 1,0 | 1,00 | 0,15 | 0.2 | 0,005 |
| HCT490X+ZF | 0,14 | 0,75 | 2,00 | 0,080 | 0,015 | 0.015 t0 1,0 | 1,00 | 0,15 | 0.2 | 0,005 |
| HCT590X+ZF | 0,15 | 0,75 | 2,50 | 0,040 | 0,015 | 0,015 t0 1,5 | 1,40 | 0,15 | 0.2 | 0,005 |
| HCT780X+ZF | 0,18 | 0,80 | 2,50 | 0,080 | 0,015 | 0,015 t0 2,0 | 1,40 | 0,15 | 0.2 | 0.005 |
| HCT980XGd+ZF | 0,20 | 1,00 | 2,90 | 0,080 | 0,015 | 0,015 t0 2,0 | 1,40 | 0,15 | 0.2 | 0,005 |
| HCT980XG+ZF | 0,23 | 1,00 | 2,90 | 0,080 | 0,015 | 0,015 t0 2,0 | 1,40 | 0,15 | 0.2 | 0,005 |
| Steel name | Proof | Tensile strength | Elongation% | Strain hardening exponent | Bake hardening index | |
| Mpa | Mpa | MPa | ||||
| min. | min. | min. | min. | |||
| dual-phase steels (X) | ||||||
| HCT450X+ZF | 260 to 340 | 450 | 27 | 0,16 | 30 | |
| HCT490X+ZF | 290 to 380 | 490 | 24 | 0,15 | 30 | |
| HCT590X+ZF | 330 to 430 | 590 | 20 | 0,14 | 30 | |
| HCT780X+ZF | 440 to 550 | 780 | 14 | - | 30 | |
| HCT980X+ZF | 590 to 740 | 980 | 10 | - | 30 | |
| HCT980XGd+ZF | 700 to 850 | 980 | 8 | - | 30 | |
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GNEE
Founded in 2008, GNEEE Steels is a well-known manufacturer, exporter and supplier of automobile body and door steel in China. Its products are suitable for various vehicles. Our products are manufactured using high-quality alloy steel as raw material and undergo quality testing on different parameters to meet international standards. Contact us to learn more!
FAQ
1. Where is your automotive steel factory located?
Our headquarters and warehouse are located in Anyang, the largest steel manufacturing center in China.
2. How long is your delivery time?
If in stock, it usually takes 5-10 days. Or if the goods are not in stock, it is 15-30 days, depending on the quantity.
3. How about the MOQ?
We do not have a minimum minimum quantity for our products, including coils and sheets.
4. How is the quality of your products?
We only sell mid- to high-end steel products with 100% quality assurance and high cost performance.
5. What are your payment terms?
You can pay to our bank account, T/T, 30% deposit in advance, 70% balance against copy of bill of lading.
6.How many countries have you exported to?
We have exported to the United States, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana, Somalia and other African countries. We have rich export experience and we are familiar with different market needs and can help customers avoid a lot of trouble.
7. What certifications do your products have?
We have ISO 9001, MTC, third-party inspection, such as SGS, BV, etc.
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