1. Key Properties:
Medium Strength: ST44 is a medium-strength carbon steel with good tensile and yield strength, making it suitable for structural applications.
Good Weldability: Offers excellent weldability, ideal for projects that require strong, reliable joints.
Corrosion Resistance: Moderate resistance to atmospheric corrosion, making it suitable for mild environmental exposure.
Machinability: ST44 has good machinability, ensuring ease of processing and fabrication into precise components.
Impact Toughness: Provides good toughness, allowing the steel to resist impacts and maintain strength under stress.
2. Applications/Industries:
Construction: Commonly used for structural applications, including beams, columns, and frames in buildings and infrastructure projects.
Pipelines: Suitable for oil and gas pipelines, as well as other piping systems requiring medium-strength materials.
Automotive: Parts that require medium strength and good formability, such as chassis components and structural parts.
Heavy Machinery: Manufacturing of machinery parts that are subject to moderate stress, including shafts and axles.
Engineering Projects: Ideal for various mechanical components that require moderate strength, toughness, and machinability.
3. Certifications/Standards:
DIN 17100: ST44 conforms to DIN 17100, a standard for structural steel with specific mechanical and chemical properties.
EN 10025: Meets the requirements of EN 10025, which is a European standard for hot-rolled structural steel.
ISO 9001: Quality management system certification.
4. Chemical Composition:
Carbon (C): 0.18% max
Manganese (Mn): 1.40% – 1.70%
Silicon (Si): 0.35% max
Phosphorus (P): 0.035% max
Sulfur (S): 0.035% max
Iron (Fe): Balance
5. Technical Specifications:
Yield Strength:
ST44: 235 MPa (minimum)
Tensile Strength:
ST44: 360–510 MPa
Hardness:
ST44: Approximately 140–190 HB (Brinell hardness)