ASTM A1085
Basic Info
The ASTM A1085 standard specifies the standard specifications for manufacturing cold formed welded steel profiles. These profiles are suitable for structures such as bridges, buildings, and transportation pipelines, and have excellent resistance to torsion and bending performance. A1085 profile has high strength and good weldability, and can withstand large loads and harsh environmental conditions. This standard covers the chemical composition, mechanical properties, and dimensional requirements of profiles to ensure that products meet engineering design requirements and meet quality standards.
Characteristics
Cold-Formed: ASTM A1085 steel is produced through cold-forming processes, resulting in hollow structural sections (HSS) with high-strength properties.
Carbon Steel: This steel grade is composed of carbon, offering high strength and durability for structural framing and support applications.
Hollow Structural Sections (HSS): ASTM A1085 steel is specifically designed for use as hollow structural sections, providing lightweight yet resilient solutions for construction projects.
Cost-Effective Manufacturing: ASTM A1085 HSS offers cost-effective manufacturing methods and materials, making it an attractive choice for structural framing and architectural designs.
ASTM A1085 Data Sheet
Steel Grade
Dimensions and Tolerances
Equivalent Steel Grades
Chemical Composition
Mechanical Properties
Fabrication and Welding
Steel Grade
Grade 50
Grade 60
Grade 70
Grade 80
Dimensions and Tolerances
ASTM A1085 Grade 50
Shape: Rectangular HSS, SHS, RHS
- Nominal Width (in): 2″ to 16″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
Shape: Round HSS
- Nominal Width (in): 2″ to 10″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
ASTM A1085 Grade 60
Shape: Rectangular HSS, SHS, RHS
- Nominal Width (in): 2″ to 16″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
Shape: Round HSS
- Nominal Width (in): 2″ to 10″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
ASTM A1085 Grade 70
Shape: Rectangular HSS, SHS, RHS
- Nominal Width (in): 2″ to 16″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
Shape: Round HSS
- Nominal Width (in): 2″ to 10″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
ASTM A1085 Grade 80
Shape: Rectangular HSS, SHS, RHS
- Nominal Width (in): 2″ to 16″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
Shape: Round HSS
- Nominal Width (in): 2″ to 10″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
ASTM A1085 Grade 100
Shape: Rectangular HSS, SHS, RHS
- Nominal Width (in): 2″ to 16″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
Shape: Round HSS
- Nominal Width (in): 2″ to 10″
- Nominal Thickness (in): 0.120″ to 0.500″
- Tolerances: Width: ±0.010″; Thickness: ±0.025″
Equivalent Steel Grades
A1085 Grade 50
- USA (ASTM): ASTM A572 Grade 50
- Canada (CSA): CSA G40.21 Grade 350W
- Europe (EN): EN 10025 S355JR
- Japan (JIS): JIS G3106 SM490A
A1085 Grade 60
- USA (ASTM): ASTM A572 Grade 60
- Canada (CSA): CSA G40.21 Grade 400W
- Europe (EN): EN 10025 S355J0
- Japan (JIS): JIS G3106 SM490C
A1085 Grade 70
- USA (ASTM): ASTM A572 Grade 70
- Canada (CSA): CSA G40.21 Grade 450W
- Europe (EN): EN 10025 S460
- Japan (JIS): JIS G3106 SM570
A1085 Grade 80
- USA (ASTM): ASTM A656 Grade 80
- Canada (CSA): CSA G40.21 Grade 550W
- Europe (EN): EN 10025 S460
- Japan (JIS): JIS G3101 SS490
A1085 Grade 90
- USA (ASTM): ASTM A1018 HSLAS Grade 90
- Canada (CSA): CSA G40.21 Grade 550W
- Europe (EN): EN 10025 S500
- Japan (JIS): JIS G3101 SS540
A1085 Grade 100
- USA (ASTM): ASTM A1018 HSLAS Grade 100
- Canada (CSA): CSA G40.21 Grade 690W
- Europe (EN): EN 10025 S550
- Japan (JIS): JIS G3101 SS540
Chemical Composition
A1085 Grade 50
- Carbon (C), %: 0.23 max
- Manganese (Mn), %: 1.35 max
- Phosphorus (P), %: 0.030 max
- Sulfur (S), %: 0.015 max
- Silicon (Si), %: 0.40 max
A1085 Grade 60
- Carbon (C), %: 0.26 max
- Manganese (Mn), %: 1.35 max
- Phosphorus (P), %: 0.030 max
- Sulfur (S), %: 0.015 max
- Silicon (Si), %: 0.40 max
A1085 Grade 70
- Carbon (C), %: 0.29 max
- Manganese (Mn), %: 1.35 max
- Phosphorus (P), %: 0.030 max
- Sulfur (S), %: 0.015 max
- Silicon (Si), %: 0.40 max
A1085 Grade 80
- Carbon (C), %: 0.33 max
- Manganese (Mn), %: 1.35 max
- Phosphorus (P), %: 0.030 max
- Sulfur (S), %: 0.015 max
- Silicon (Si), %: 0.40 max
A1085 Grade 90
- Carbon (C), %: 0.36 max
- Manganese (Mn), %: 1.35 max
- Phosphorus (P), %: 0.030 max
- Sulfur (S), %: 0.015 max
- Silicon (Si), %: 0.40 max
A1085 Grade 100
- Carbon (C), %: 0.40 max
- Manganese (Mn), %: 1.35 max
- Phosphorus (P), %: 0.030 max
- Sulfur (S), %: 0.015 max
- Silicon (Si), %: 0.40 max
Mechanical Properties
A1085 Grade 50
- Yield Strength (min), ksi (MPa): 50 (345)
- Tensile Strength, ksi (MPa): 65 (448)
- Elongation in 2 inches (50 mm), %: 21
- Elongation in 8 inches (200 mm), %: 23
- Reduction of Area, %: 25
A1085 Grade 60
- Yield Strength (min), ksi (MPa): 60 (414)
- Tensile Strength, ksi (MPa): 75 (517)
- Elongation in 2 inches (50 mm), %: 19
- Elongation in 8 inches (200 mm), %: 21
- Reduction of Area, %: 25
A1085 Grade 70
- Yield Strength (min), ksi (MPa): 70 (483)
- Tensile Strength, ksi (MPa): 80 (552)
- Elongation in 2 inches (50 mm), %: 17
- Elongation in 8 inches (200 mm), %: 19
- Reduction of Area, %: 25
A1085 Grade 80
- Yield Strength (min), ksi (MPa): 80 (552)
- Tensile Strength, ksi (MPa): 90 (621)
- Elongation in 2 inches (50 mm), %: 16
- Elongation in 8 inches (200 mm), %: 18
- Reduction of Area, %: 25
A1085 Grade 90
- Yield Strength (min), ksi (MPa): 90 (621)
- Tensile Strength, ksi (MPa): 100 (689)
- Elongation in 2 inches (50 mm), %: 15
- Elongation in 8 inches (200 mm), %: 17
- Reduction of Area, %: 25
A1085 Grade 100
- Yield Strength (min), ksi (MPa): 100 (689)
- Tensile Strength, ksi (MPa): 110 (758)
- Elongation in 2 inches (50 mm), %: 14
- Elongation in 8 inches (200 mm), %: 16
- Reduction of Area, %: 25
Fabrication and Welding
A1085 Grade 50
- Weldability: Excellent
- Preheat and Interpass Temperature: Not required
- Heat Input Control: Not critical
- Preheat and Post Weld Heat Treatment (PWHT): Not required
- Bendability: Good
A1085 Grade 60
- Weldability: Excellent
- Preheat and Interpass Temperature: Not required
- Heat Input Control: Not critical
- Preheat and Post Weld Heat Treatment (PWHT): Not required
- Bendability: Good
A1085 Grade 70
- Weldability: Excellent
- Preheat and Interpass Temperature: Not required
- Heat Input Control: Not critical
- Preheat and Post Weld Heat Treatment (PWHT): Not required
- Bendability: Good
A1085 Grade 80
- Weldability: Excellent
- Preheat and Interpass Temperature: Not required
- Heat Input Control: Not critical
- Preheat and Post Weld Heat Treatment (PWHT): Not required
- Bendability: Good
A1085 Grade 90
- Weldability: Excellent
- Preheat and Interpass Temperature: Not required
- Heat Input Control: Not critical
- Preheat and Post Weld Heat Treatment (PWHT): Not required
- Bendability: Good
A1085 Grade 100
- Weldability: Excellent
- Preheat and Interpass Temperature: Not required
- Heat Input Control: Not critical
- Preheat and Post Weld Heat Treatment (PWHT): Not required
- Bendability: Good
Celebrating Durability: The Superior Corrosion Resistance of ASTM A1085 Steel
ASTM A1085 steel stands out for its exceptional corrosion resistance, making it a top choice for structural applications. Engineered with high-strength, low-alloy (HSLA) properties, A1085 is built to endure outdoor elements without sacrificing structural integrity. Its superior resistance to atmospheric corrosion, moisture, and environmental factors is a result of precise alloying techniques.
Customers seeking longevity and durability in their structures find ASTM A1085 particularly compelling. Whether it’s bridges, buildings, or outdoor installations, A1085 steel ensures extended service life and reduced maintenance costs. Concerns about rust and deterioration become a thing of the past with A1085, providing peace of mind for architects, engineers, and builders alike.
Beyond its corrosion resistance, A1085 maintains excellent weldability and formability, adding to its versatility for various construction projects. This steel offers not just compliance with stringent performance standards, but also surpasses expectations with its resilience and reliability over time.
