300BH High Strength Steel Bake Hardening Auto Outer Panel

Grade Explanation & Applicable Standards

B410LA, HC410LA and TS410LA all belong to the 410MPa-class HSLA steel series. They differ only in naming conventions due to different mill systems and certification standards, with no essential differences in core material properties, service performance or processing parameters, and can be seamlessly substituted in industrial applications.
B410LAA mainstream high-strength steel grade for domestic automotive applications, produced in compliance with Baosteel’s Q/BQB 410 standard. Stable performance and high versatility make it the primary structural material for domestic and joint-venture automakers.
HC410LAAn HSLA grade under the European standard system, manufactured strictly in accordance with EN 10268. Ideal for export orders, European-spec automotive components and overseas machinery parts.
TS410LAAn optimized custom grade from major steelworks, with tighter control over dimensional tolerances and surface quality. Superior surface precision and flatness compared with conventional grades, fully interchangeable with B410LA and HC410LA.
All three grades comply with GB/T 20564.4 and global industrial procurement specifications. Full set of compliant documentation is available, including third-party inspection reports, SGS certificates and original material test reports (MTRs).

Core Product Advantages

Compared with conventional low-carbon steel and regular high-strength steel, the 410LA HSLA series offers outstanding advantages and is the preferred material for industrial lightweighting.
Lightweight EfficiencyHigh strength allows thickness reduction while maintaining structural safety, achieving 15%–25% weight reduction, effectively lowering energy consumption and production costs.
Excellent FormabilityGood elongation supports complex stamping, bending and roll forming without cracking or wrinkling, resulting in higher yield rates.
Superb WeldabilityLow carbon and low sulfur design ensures stable spot welding and arc welding. Uniform, strong welds free of porosity and cracks, with no significant strength reduction after welding.
Premium Surface QualityCold-rolled for a smooth, clean surface free of scratches and scale, with tight dimensional tolerances ideal for precision parts manufacturing.
Wide CompatibilityFull interchangeability among three grades, no procurement restrictions, sufficient stock and short lead times to support large-scale mass production.