Product Description | BH Steel
Bake-hardening steel (BH steel) is a kind of steel with special properties. After stamping, it is baked and coated (usually baked at 170°C-200°C temperature for 1030 minutes), and its yield strength will be significantly improved. This can enhance the anti-sag and crash safety of the product. The steel is widely used in the automotive industry to produce parts that require high strength and good formability.
Key Features
| Grades according to EN10346 | HX180BD, HX220BD, HX260BD, HX300BD |
| Grades according to VDA 239-100:2016 | CR180BH, CR210BH, CR240BH, CR270BH |
Other Features
1. High strength: After baking treatment, the yield strength of BH steel is significantly improved, which helps to improve the bearing capacity and anti-sag of the product.
2. Good formability: in the stamping forming stage, it shows good plasticity and ductility, easy to process into a variety of complex shapes.
4. Lightweight: Due to the high strength of this steel, it can reduce the thickness of the material while ensuring the performance, so as to achieve lightweight design.
5. Excellent paint performance: in the baking coating process is not easy to crack, wrinkle and other defects, to ensure good surface quality.
Chemical Composition Of Bake-hardening Steel
| Grades according to EN10346VDA 239-100:2016 | Heat analysis in % | ||||||||
| C max | Mn max | Si max | P max | S max | Al max | Ti max | Nb max | Cu max | |
| HX180BD+Z | 0.06 | 0.70 | 0.50 | 0.060 | 0.025 | 0.015 | 0.12 | 0.09 | – |
| CR180BH-GI | 0.06 | 0.70 | 0.50 | 0.060 | 0.025 | 0.015 | – | – | 0.20 |
| HX220BD+Z | 0.08 | 0.70 | 0.50 | 0.085 | 0.025 | 0.015 | 0.12 | 0.09 | – |
| CR210BH-GI | 0.08 | 0.70 | 0.50 | 0.085 | 0.025 | 0.015 | – | – | 0.20 |
| CR240BH-GI | 0.10 | 1.00 | 0.50 | 0.100 | 0.030 | 0.015 | – | – | 0.20 |
| HX260BD+Z | 0.10 | 1.00 | 0.50 | 0.100 | 0.030 | 0.010 | 0.12 | 0.09 | – |
| CR270BH-GI | 0.11 | 1.00 | 0.50 | 0.110 | 0.030 | 0.015 | – | – | 0.20 |
| HX300BD+Z | 0.11 | 0.80 | 0.50 | 0.120 | 0.025 | 0.010 | 0.12 | 0.09 | – |
Application Field Of Bake-hardening Steel
1. Automobile manufacturing
The application of bake-hardening steel in automobile manufacturing is its most important field. Due to its good stamping properties and baking hardening characteristics, it can be used to manufacture key components of automobiles, especially those requiring high strength and good formability. For example:
Body parts: door, hood, trunk cover, roof and other parts. These parts need to be stamped during manufacturing and painted and baked before final assembly. BH steel is able to maintain good formability during these processes and further enhance strength through the phenomenon of aging during the paint baking process.
Safety structural parts: With the improvement of automotive safety performance requirements, it can also manufacture some safety structural parts, such as bumper reinforcement, A pillar and B pillar, etc. These components need to withstand large impact forces, thus requiring high strength and toughness of the material.
2. Other industrial fields
The steel has potential applications in other industrial sectors besides car manufacturing. For example:
Home appliance manufacturing: In the field of home appliance manufacturing, BH steel can be used to manufacture some parts that need to bear large loads and have good formability, such as the drum of washing machine, the side panel of refrigerator, etc.
Construction industry: In the construction industry, it can manufacture some structural parts and supports, which need to bear a certain load and maintain stability.
Machining: In the field of machining, tools, molds and other parts need to bear large cutting force and impact force in the process of use, so the material is required to have high hardness and wear resistance.
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