Microalloyed Bake-Hardening Steels

Specification

Introduction

Characterization

Mechanical Properties

Bake Hardening Steel Introduction

Bake hardening steel is a special bake hardening steel with high strength and high formability. The production process of this steel includes a number of steps, such as smelting, continuous casting, rolling, baking and surface treatment, among which baking hardening is the core step, by baking at a specific temperature, the internal structure of the steel changes, thereby enhancing its mechanical properties and strength.

Thickness: 0.4- 5mm&nbsp

Width: 10-650mm

Coils inner diameter: 400-500 mm

Cut to length: Customized, 450-5100mm lengths

Traverse wound: Up to 30mm of width and max.3500 kgs coils

Tolerances:

to DIN 1544/DIN EN 10140

to DIN 1541/DIN EN 10131

normal, fine and precision tolerances or according contract

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Bake Hardening Steel Characterization

High strength and high toughness operation

Application scenario: The high strength properties of BH steel make it particularly suitable for applications that bear high loads, such as the key support parts of building structures, the manufacture of automobile bodies and chassis.
Operation Guide: In practice, the high strength of baked hardened steel allows designers to reduce the amount and weight of the material, thereby reducing costs and enabling lightweight designs. At the same time, the high toughness ensures that the material is not easy to break when subjected to shock or vibration, improving the overall reliability of the product.

Good formability operation

Application scenario: The good formability of bake hardenable steels makes it suitable for manufacturing parts with complex shapes and structures, such as stamping of automotive parts, housing of home appliances, etc.
Operation Guide: During the forming process, baking hardened steel can achieve fine shape control through stamping, bending and other processes, while maintaining high material properties. Through reasonable mold design and process parameter adjustment, the forming effect can be further optimized.

Excellent corrosion resistance operation

Application scenario: The corrosion resistance of Bake Hardening Steel makes it especially suitable for Marine, petroleum, chemical and other corrosive environments, such as the manufacture of ships, pipelines, storage tanks and other equipment.
Operation guide: During use, bake hardening of automotive steels can extend the service life of the equipment and reduce maintenance costs. In addition, through reasonable surface treatment (such as galvanized, coating, etc.), its corrosion resistance can be further improved.

Excellent welding performance operation

Application scenario: The BH Steel has excellent welding performance and is suitable for various welding methods, such as arc welding, laser welding, etc., which is convenient for connection and assembly operation.
Operation Guide: During the welding process, BH steel can be joined by conventional welding processes without the need for special welding methods or equipment. At the same time, the strength and toughness of the welded joint are still high, ensuring the stability and reliability of the overall structure.

Low cost operation

Application scenario: Compared with other high-strength steels and stainless steels, the preparation cost of bake hardening steel sheets is lower, giving it a competitive advantage in areas with high cost control requirements.
Operation guide: In the production process, by optimizing the production process and parameters, the preparation cost of baking hardened steel can be further reduced. At the same time, its high strength characteristics can reduce the amount of material used, further reducing costs.

Mechanical Properties of Bake Hardenable Steels

During the stamping forming process, BH steel exhibits excellent ductility and plasticity, making it easy to be processed into various complex shapes. After baking, the strength of the steel is significantly enhanced, meeting the high requirements for the strength of components.

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Proof Strength

180-360 MPa

Tensile Strength

290-480 MPa

Elongation at fracture A802) % min.

26-34

Anisotropy r903)4) min.

1.5-1.6

Strain hardening exponent n903) min.

0.16-0.17

Bake hardening index BH25) min.

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Steel grade pursuant to
EN 10346	EN 10268	VDA 239-100	UC	ZE/EG	Z/GI	ZF/GA	ZM/ZM
HX180BD	HC180B	CR180BH	0.5-1.6	0.5-1.6	0.6-2.5	0.6-2.0	0.6-2.0
HX220BD	HC220B	CR210BH	0.5-1.6	0.5-1.6	0.6-2.5	0.6-2.0	0.6-2.0
HX260BD	HC260B	CR240BH	0.5-2.0	0.5-2.0	0.6-2.5	0.6-2.0	0.6-2.0
HX300BD	HC300B	CR270BH	0.5-2.0	0.5-2.0	0.6-2.5	0.6-1.5	0.6-1.8

Bake Hardening Steels

Bake Hardening Steel Introduction

Mechanical Properties of Bake Hardenable Steels

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