BMW Automotive Steel Grades Guide

BMW automotive steel specifications cover a wide range of materials for vehicle body manufacturing, stamping, structural components and safety-related applications. These materials include conventional cold rolled steel, hot rolled steel, galvanized steel, bake-hardening steel, interstitial-free steel and advanced high-strength steel.

Solucky supplies a range of steel grades listed under BMW GS 93032 and GS 93005-2 specifications. The available designations cover different strength levels, coating requirements, forming characteristics and material conditions.

This guide organizes the supplied BMW steel grades by specification and material category, helping automotive manufacturers, steel service centers and purchasing teams identify suitable materials for their production requirements.

1. BMW GS 93032 Automotive Steel Grades

GS 93032 covers multiple automotive steel categories, including conventional cold rolled steel, hot rolled steel, high-strength low-alloy steel and advanced high-strength steel.

1.1 Conventional Cold Rolled and Hot Rolled Steel

These grades cover conventional cold rolled and hot rolled steel products used in automotive stamping, forming and component manufacturing.

Cold Rolled Steel (CR)

• GS93032-3 CR1-GI50/50-U

• GS93032-3 CR2-GI50/50-U

• GS93032-3 CR3-GI50/50-U

• GS93032-3 CR4-GI50/50-U

• GS93032-3 CR5-GI50/50-U

Hot Rolled Steel (HR)

• GS93032-3 HR2

Additional designations under GS 93032-2 include:

• GS93032-2-CR1

• GS93032-2-CR2

• GS93032-2-CR3

• GS93032-2-CR4

• GS93032-2-CR5

• GS93032-2-HR2

These conventional grades can be evaluated for general automotive stamping and forming applications according to their specified mechanical properties and surface requirements.

1.2 Interstitial-Free Steel (IF)

Interstitial-free steel is designed for applications requiring excellent ductility and deep-drawing performance. Its low interstitial element content helps improve formability and reduce the risk of cracking during complex stamping operations.

GS 93032-3

• GS93032-3 CR180IF-GI50/50-U

• GS93032-3 CR210IF-GI50/50-U

• GS93032-3 CR240IF-GI50/50-U

GS 93032-5

• GS 93032-5-CR180IF

• GS 93032-5-CR180IF-CR210IF

• GS 93032-5-CR180IF-CR240IF

These grades are relevant to automotive body panels and other formed components where high drawability and consistent forming performance are important.

1.3 Bake-Hardening Steel (BH)

Bake-hardening steel is designed to develop increased strength during the paint-baking process after forming. It provides a balance between stamping performance and final component strength.

GS 93032-3

• GS93032-3 CR180BH-GI50/50-U

• GS93032-3 CR210BH-GI50/50-U

• GS93032-3 CR240BH-GI50/50-U

• GS93032-3 CR280BH-GI50/50-U

GS 93032-4

• GS 93032-4-CR180BH

• GS 93032-4-CR210BH

• GS 93032-4-CR240BH

• GS 93032-4-CR280BH

These materials can be considered for automotive stamped components requiring good initial formability and improved strength after paint baking.

1.4 Low-Alloy High-Strength Steel (LA)

Low-alloy high-strength steel provides improved strength compared with conventional mild steel while maintaining suitable formability for different automotive manufacturing processes.

Cold Rolled LA Steel (CR)

• GS93032-3 CR210LA-GI50/50-U

• GS93032-3 CR240LA-GI50/50-U

• GS93032-3 CR270LA-GI50/50-U

• GS93032-3 CR300LA-GI50/50-U

• GS93032-3 CR340LA-GI50/50-U

• GS93032-3 CR380LA-GI50/50-U

• GS93032-3 CR420LA-GI50/50-U

Additional designations:

• GS 93032-3-CR210LA

• GS 93032-3-CR240LA

• GS 93032-3-CR270LA

• GS 93032-3-CR340LA

• GS 93032-3-CR380LA

• GS 93032-3-CR420LA

Hot Rolled LA Steel (HR)

• GS93032-3 HR300LA-GI50/50-U

• GS93032-3 HR340LA-GI50/50-U

• GS93032-3 HR380LA-GI50/50-U

• GS93032-3 HR420LA-GI50/50-U

• GS93032-3 HR460LA-GI50/50-U

• GS93032-3 HR500LA-GI50/50-U

Additional designations:

• GS 93032-3-HR300LA

• GS 93032-3-HR340LA

• GS 93032-3-HR380LA

• GS 93032-3-HR420LA

• GS 93032-3-HR460LA

• GS 93032-3-HR500LA

These grades can be evaluated for automotive structural parts, reinforcement components and formed metal assemblies requiring different strength levels.

1.5 Microalloyed Steel (MC)

Microalloyed steel uses small additions of alloying elements to improve strength and mechanical performance while maintaining suitable processing characteristics.

GS 93032-3

• GS93032-3 HR300MC

• GS93032-3 HR340MC

• GS93032-3 HR380MC

• GS93032-3 HR420MC

• GS93032-3 HR460MC

• GS93032-3 HR500MC

Additional designations:

• GS 93032-3-HR300MC

• GS 93032-3-HR340MC

• GS 93032-3-HR380MC

• GS 93032-3-HR420MC

• GS 93032-3-HR460MC

• GS 93032-3-HR500MC

These hot rolled grades can be considered for automotive structural components and parts requiring improved strength and load-bearing performance.

1.6 Dual-Phase Steel (DP)

Dual-phase steel features a ferrite-martensite microstructure, combining high tensile strength with useful formability and work-hardening characteristics.

Cold Rolled DP Steel (GS 93032-3)

• GS93032-3 CR250Y440T-DP-GI50/50-U

• GS93032-3 CR290Y490T-DP-GI50/50-U

• GS93032-3 CR330Y590T-DP-GI50/50-U

• GS93032-3 CR440Y780T-DP-GI50/50-U

• GS93032-3 CR700Y980T-DP-GI50/50-U

Hot Rolled DP Steel (GS 93032-3)

• GS93032-3 HR330Y580T-DP-GI50/50-U

Additional designations under GS 93032-7:

• GS 93032-7-CR250Y440T-DP

• GS 93032-7-CR290Y490T-DP

• GS 93032-7-CR330Y590T-DP

• GS 93032-7-CR440Y780T-DP

• GS 93032-7-CR700Y980T-DP

• GS 93032-7-HR330Y580T-DP

DP steel is used in automotive applications where high strength, deformation capability and structural performance are required.

1.7 Transformation-Induced Plasticity Steel (TR)

TRIP steel uses transformation-induced plasticity to improve deformation behavior and energy absorption. It is considered for automotive components requiring a combination of strength and formability.

GS 93032-3

• GS93032-3 CR400Y690T-TR-GI50/50-U

GS 93032-9

• GS 93032-9-CR400Y690T-TR

1.8 Complex-Phase Steel (CP)

Complex-phase steel is an advanced high-strength steel category designed for demanding automotive structural applications. Its microstructure provides a combination of strength and deformation characteristics.

GS 93032-3

• GS93032-3 CR570Y780T-CP-GI50/50-U

• GS93032-3 CR660Y780T-CP-GI50/50-U

• GS93032-3 HR660Y760T-CP-GI50/50-U

Additional GS 93032 Designations

• GS 93032-8-CR570Y780T-CP

• GS 93032-8-CR660Y780T-CP

• GS 93032-8-HR660Y760T-CP

1.9 Martensitic Steel (MS)

Martensitic steel is designed for applications requiring very high strength and structural performance. It is commonly considered for selected automotive safety and reinforcement components.

GS 93032-3

• GS93032-3 CR950Y1200T-MS-GI50/50-U

• GS93032-3 HR900Y1180T-MS-GI50/50-U

GS 93032-10

• GS 93032-10-CR950Y1200T-MS

• GS 93032-10-HR900Y1180T-MS

1.10 Other GS 93032 Steel Grades: MB

The supplied list also includes the following MB designations:

• GS 93032-6-HR280MB

• GS 93032-6-HR280MB-CR300MB

• GS 93032-6-HR280MB-CR380MB

These grades should be confirmed against the applicable GS 93032-6 specification before assigning detailed material properties or automotive applications.

2. BMW GS 93005-2 Automotive Steel Grades

GS 93005-2 includes galvanized steel, conventional cold rolled steel and different high-strength steel categories for automotive manufacturing.

2.1 Galvanized Drawing Quality Steel

The following DX grades are listed under GS 93005-2:

• GS 93005-2 DX52D+Z

• GS 93005-2 DX53D+Z

• GS 93005-2 DX54D+Z

• GS 93005-2 DX56D+Z

• GS 93005-2 DX57D+Z

These galvanized steel grades are associated with different forming requirements. The appropriate grade should be selected according to stamping depth, component geometry, coating requirements and applicable technical specifications.

2.2 Conventional Cold Rolled Steel (HC-Y)

• GS 93005-2 HC180Y

• GS 93005-2 HC220Y

• GS 93005-2 HC260Y

These grades cover conventional cold rolled steel strength classifications for automotive forming and component manufacturing.

2.3 Bake-Hardening Steel (HC-B)

• GS 93005-2 HC180B

• GS 93005-2 HC220B

• GS 93005-2 HC260B

• GS 93005-2 HC300B

These grades are associated with bake-hardening performance and can be considered for automotive components requiring forming performance followed by strength development during paint baking.

2.4 Cold Rolled Low-Alloy High-Strength Steel (HC-LA)

• GS 93005-2 HC220LA

• GS 93005-2 HC260LA

• GS 93005-2 HC300LA

• GS 93005-2 HC340LA

• GS 93005-2 HC380LA

• GS 93005-2 HC420LA

These grades offer different strength levels for automotive structural and formed components.

2.5 Hot Rolled Low-Alloy High-Strength Steel (HD-LA)

• GS 93005-2 HD340LA

• GS 93005-2 HD380LA

• GS 93005-2 HD420LA

These hot rolled LA grades can be considered for automotive structural components requiring higher strength and suitable fabrication performance.

3. How to Select the Right BMW Automotive Steel Grade?

Selecting the right BMW steel grade requires consideration of the component's function, forming process, strength requirements, corrosion protection and production conditions.

The following guide provides a practical starting point for automotive material selection.

1. For General Stamping and Deep Drawing

Consider CR1–CR5, IF and DX52D+Z to DX57D+Z grades according to the required formability, drawing depth and surface condition.

IF grades are particularly relevant when complex drawing operations require high ductility.

2. For Components Requiring Paint-Bake Strengthening

Consider BH grades when the production process includes stamping followed by paint baking. These materials are designed to provide suitable forming performance and increased final strength.

3. For Automotive Structural Components

LA and MC grades can be evaluated for structural parts, brackets and reinforcement components requiring higher strength than conventional mild steel.

4. For High-Strength Automotive Safety Components

DP, TR, CP and MS grades offer different combinations of strength and deformation behavior. The final choice should consider component design, crash performance targets, forming conditions and joining requirements.

5. For Corrosion Protection

GI-coated grades are suitable for applications where metallic coating protection is specified. Buyers should confirm the required coating mass, surface condition and corrosion performance requirements before purchasing.

6. For Hot Rolled and Cold Rolled Material Requirements

Cold rolled grades are commonly selected for components requiring good surface quality, tighter dimensional tolerances and precision stamping. Hot rolled grades can be considered for structural components and applications where their surface and dimensional characteristics meet the design requirements.

4. What Should Buyers Confirm Before Ordering BMW Steel?

Before purchasing BMW specification steel, buyers should confirm the following information:

• Complete GS specification number and revision.

• Steel grade and material category.

• Cold rolled or hot rolled product requirement.

• GI coating type and coating mass, where applicable.

• Required thickness, width and dimensional tolerances.

• Mechanical properties and testing requirements.

• Surface quality and delivery condition.

• Mill Test Certificate and inspection requirements.

• Order quantity and delivery schedule.

Using the complete BMW material designation helps avoid confusion between different specification revisions, material categories and coating requirements.

5. Source BMW Automotive Steel from Solucky

Solucky supplies a range of BMW GS 93032 and GS 93005-2 automotive steel grades, covering conventional cold rolled steel, hot rolled steel, galvanized steel, bake-hardening steel and advanced high-strength steel.

Our product range includes IF, BH, LA, MC, DP, TR, CP and MS steel categories for different automotive manufacturing requirements.

Whether you are sourcing galvanized stamping steel, high-strength structural steel or advanced automotive steel for safety-related components, Solucky can help review your specified grade, dimensions, coating requirements and purchasing needs.

Contact Solucky with your complete BMW steel designation, required thickness, width and order quantity to discuss material availability and request a quotation.