ASTM A1018
Basic Info
ASTM A1018 is another specification for hot-rolled carbon steel sheets and strips, offering similar properties to ASTM A1011 but with tighter thickness tolerances and improved surface quality. This steel grade is commonly used in applications requiring precise dimensional control and enhanced surface finish, such as automotive panels, appliances, and structural components. ASTM A1018 steel provides manufacturers with versatility and reliability, enabling the production of high-quality products that meet stringent performance standards.
Characteristics
Hot-Rolled: ASTM A1018 steel is produced through hot-rolling processes, resulting in sheets and strips with tight thickness tolerances and improved surface quality.
Carbon Steel: Similar to ASTM A1011, this steel grade is primarily composed of carbon, offering good weldability and formability.
Precision Dimensional Control: ASTM A1018 steel features tight thickness tolerances, making it suitable for applications requiring precise dimensional control.
Surface Finish: ASTM A1018 steel exhibits improved surface finish compared to ASTM A1011, making it ideal for applications requiring enhanced aesthetics.
ASTM A1018 Data Sheet
Steel Grade
Dimensions and Tolerances
Equivalent Steel Grades
Chemical Composition
Mechanical Properties
Fabrication and Welding
Steel Grade
ASTM A1018 Grade：
- Grade 30
- Grade 33
- Grade 36
- Grade 40
- Grade 50
- Grade 60
- Grade 65
ASTM A1018 HSLAS Grade:
- Grade 30
- Grade 33
- Grade 36
- Grade 40
- Grade 50
- Grade 60
- Grade 65
ASTM A1018 HSLAS-F Grade:
- Grade 30
- Grade 33
- Grade 36
- Grade 40
- Grade 50
- Grade 60
- Grade 65
Dimensions and Tolerances
ASTM A1018 HSLAS Grade 50
- Shape: Sheet, Coil
- Width Range (inches): 48–96
- Thickness Range (inches): 0.071–0.179
- Tolerances:
Width: ±0.010″
Thickness: ±0.005″
Length: ±1/4″
ASTM A1018 HSLAS Grade 55
- Shape: Sheet, Coil
- Width Range (inches): 48–96
- Thickness Range (inches): 0.071–0.179
- Tolerances:
Width: ±0.010″
Thickness: ±0.005″
Length: ±1/4″
ASTM A1018 HSLAS Grade 60
- Shape: Sheet, Coil
- Width Range (inches): 48–96
- Thickness Range (inches): 0.071–0.179
- Tolerances:
Width: ±0.010″
Thickness: ±0.005″
Length: ±1/4″
ASTM A1018 HSLAS-F Grade 50
- Shape: Sheet, Coil
- Width Range (inches): 48–96
- Thickness Range (inches): 0.071–0.179
- Tolerances:
Width: ±0.010″
Thickness: ±0.005″
Length: ±1/4″
ASTM A1018 HSLAS-F Grade 60
- Shape: Sheet, Coil
- Width Range (inches): 48–96
- Thickness Range (inches): 0.071–0.179
- Tolerances:
Width: ±0.010″
Thickness: ±0.005″
Length: ±1/4″
ASTM A1018 SS Grade 36
- Shape: Sheet, Coil
- Width Range (inches): 48–96
- Thickness Range (inches): 0.231–0.520
- Tolerances:
Width: ±0.040″
Thickness: ±0.008″
Length: ±1/2″
Equivalent Steel Grades
ASTM A1018 HSLAS Grade 50
- Germany (DIN): –
- Japan (JIS): –
- China (GB/T): –
- United Kingdom (BS): –
ASTM A1018 HSLAS Grade 55
- Germany (DIN): –
- Japan (JIS): –
- China (GB/T): –
- United Kingdom (BS): –
ASTM A1018 HSLAS Grade 60
- Germany (DIN): –
- Japan (JIS): –
- China (GB/T): –
- United Kingdom (BS): –
ASTM A1018 HSLAS Grade 70
- Germany (DIN): –
- Japan (JIS): –
- China (GB/T): –
- United Kingdom (BS): –
ASTM A1018 HSLAS-F Grade 50
- Germany (DIN): –
- Japan (JIS): –
- China (GB/T): –
- United Kingdom (BS): –
ASTM A1018 HSLAS-F Grade 60
- Germany (DIN): –
- Japan (JIS): –
- China (GB/T): –
- United Kingdom (BS): –
ASTM A1018 SS Grade 36
- Germany (DIN): S235Jr (1.0037)
- Japan (JIS): SS400 (SBA)
- China (GB/T): Q235B (GB/T 700)
- United Kingdom (BS): S275JR (1.0044)
Chemical Composition
ASTM A1018 HSLAS Grade 50:
- Carbon (C): 0.10 max
- Manganese (Mn): 1.60 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): —
ASTM A1018 HSLAS Grade 55:
- Carbon (C): 0.10 max
- Manganese (Mn): 1.60 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): —
ASTM A1018 HSLAS Grade 60:
- Carbon (C): 0.10 max
- Manganese (Mn): 1.35 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): —
ASTM A1018 HSLAS Grade 65:
- Carbon (C): 0.10 max
- Manganese (Mn): 1.25 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): —
ASTM A1018 HSLAS Grade 70:
- Carbon (C): 0.20 max
- Manganese (Mn): 1.65 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.45 max
- Copper (Cu): —
ASTM A1018 HSLAS-F Grade 70:
- Carbon (C): 0.20 max
- Manganese (Mn): 1.65 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.45 max
- Copper (Cu): —
ASTM A1018 HSLAS Grade 80:
- Carbon (C): 0.20 max
- Manganese (Mn): 1.65 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.45 max
- Copper (Cu): —
ASTM A1018 HSLAS-F Grade 50:
- Carbon (C): 0.20 max
- Manganese (Mn): 1.60 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): 0.20 min
ASTM A1018 HSLAS-F Grade 60:
- Carbon (C): 0.20 max
- Manganese (Mn): 1.35 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): 0.20 min
ASTM A1018 SS Grade 36:
- Carbon (C): 0.26 max
- Manganese (Mn): 0.60 – 0.90
- Phosphorus (P): 0.04 max
- Sulfur (S): 0.05 max
- Silicon (Si): 0.40 max
- Copper (Cu): 0.20 min
Mechanical Properties
ASTM A1018 HSLAS Grade 50
- Carbon (C): 0.18 max
- Manganese (Mn): 1.60 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): 0.20 min
ASTM A1018 HSLAS Grade 55
- Carbon (C): 0.18 max
- Manganese (Mn): 1.60 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): 0.20 min
ASTM A1018 HSLAS Grade 60
- Carbon (C): 0.18 max
- Manganese (Mn): 1.75 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): 0.20 min
ASTM A1018 HSLAS Grade 70
- Carbon (C): 0.18 max
- Manganese (Mn): 1.65 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): 0.20 min
ASTM A1018 HSLAS-F Grade 50
- Carbon (C): 0.18 max
- Manganese (Mn): 1.60 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): 0.20 min
ASTM A1018 HSLAS-F Grade 60
- Carbon (C): 0.18 max
- Manganese (Mn): 1.60 max
- Phosphorus (P): 0.025 max
- Sulfur (S): 0.035 max
- Silicon (Si): 0.30 max
- Copper (Cu): 0.20 min
ASTM A1018 SS Grade 36
- Carbon (C): 0.26 max
- Manganese (Mn): 0.60–0.90
- Phosphorus (P): 0.040 max
- Sulfur (S): 0.050 max
- Silicon (Si): 0.40 max
- Copper (Cu): 0.20 min
Fabrication and Welding
ASTM A1018 HSLAS Grade 50
Fabrication Recommendations:
- Hot Working: Temperature range 1652°F-2257°F. Rapid quench after hot working.
- Cold Working: Can be cold formed using conventional methods.
- Machining: Use water-based coolant for cutting operations. Avoid sulfur-based fluids.
- Forming: Good formability. Heat assist may be needed.
- Heat Treatment: Annealing is recommended after welding to restore ductility.
Welding Recommendations:
- Welding Methods: Shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), submerged arc welding (SAW).
- Use low hydrogen electrodes. Preheat may be required.
- Use a heat input of 20 kJ/in for best results.
- Post-weld and pre-weld heat treatment recommended.
ASTM A1018 HSLAS Grade 55
Fabrication Recommendations:
- Hot Working: Temperature range 1652°F-2257°F. Rapid quench after hot working.
- Cold Working: Can be cold formed using conventional methods.
- Machining: Use water-based coolant for cutting operations. Avoid sulfur-based fluids.
- Forming: Good formability, heat assist may be needed.
- Heat Treatment: Annealing is recommended after welding to restore ductility.
Welding Recommendations:
- Welding Methods: Shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), submerged arc welding (SAW).
- Use low hydrogen electrodes. Preheat may be required.
- Use a heat input of 20 kJ/in for best results.
- Post-weld and pre-weld heat treatment recommended.
ASTM A1018 HSLAS Grade 60
Fabrication Recommendations:
- Hot Working: Temperature range 1652°F-2257°F. Rapid quench after hot working.
- Cold Working: Can be cold formed using conventional methods.
- Machining: Use water-based coolant for cutting operations. Avoid sulfur-based fluids.
- Forming: Good formability. Heat assist may be needed.
- Heat Treatment: Annealing is recommended after welding to restore ductility.
Welding Recommendations:
- Welding Methods: Shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), submerged arc welding (SAW).
- Use low hydrogen electrodes. Preheat may be required.
- Use a heat input of 20 kJ/in for best results.
- Post-weld and pre-weld heat treatment recommended.
ASTM A1018 HSLAS Grade 70
Fabrication Recommendations:
- Hot Working: Temperature range 1652°F-2257°F. Rapid quench after hot working.
- Cold Working: Can be cold formed using conventional methods.
- Machining: Use water-based coolant for cutting operations. Avoid sulfur-based fluids.
- Forming: Good formability. Heat assist may be needed.
- Heat Treatment: Annealing is recommended after welding to restore ductility.
Welding Recommendations:
- Welding Methods: Shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), submerged arc welding (SAW).
- Use low hydrogen electrodes. Preheat may be required.
- Use a heat input of 20 kJ/in for best results.
- Post-weld and pre-weld heat treatment recommended.
ASTM A1018 HSLAS-F Grade 50
Fabrication Recommendations:
- Hot Working: Temperature range 1652°F-2257°F. Rapid quench after hot working.
- Cold Working: Can be cold formed using conventional methods.
- Machining: Use water-based coolant for cutting operations. Avoid sulfur-based fluids.
- Forming: Good formability. Heat assist may be needed.
- Heat Treatment: Annealing is recommended after welding to restore ductility.
Welding Recommendations:
- Welding Methods: Shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), submerged arc welding (SAW).
- Use low hydrogen electrodes. Preheat may be required.
- Use a heat input of 20 kJ/in for best results.
- Post-weld and pre-weld heat treatment recommended.
ASTM A1018 HSLAS-F Grade 60
Fabrication Recommendations:
- Hot Working: Temperature range 1652°F-2257°F. Rapid quench after hot working.
- Cold Working: Can be cold formed using conventional methods.
- Machining: Use water-based coolant for cutting operations. Avoid sulfur-based fluids.
- Forming: Good formability. Heat assist may be needed.
- Heat Treatment: Annealing is recommended after welding to restore ductility.
Welding Recommendations:
- Welding Methods: Shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), submerged arc welding (SAW).
- Use low hydrogen electrodes. Preheat may be required.
- Use a heat input of 20 kJ/in for best results.
- Post-weld and pre-weld heat treatment recommended.
ASTM A1018 SS Grade 36
Fabrication Recommendations:
- Hot Working: Temperature range 1652°F-2257°F. Rapid quench after hot working.
- Cold Working: Can be cold formed using conventional methods.
- Machining: Use water-based coolant for cutting operations. Avoid sulfur-based fluids.
- Forming: Good formability. Heat assist may be needed.
- Heat Treatment: Annealing is recommended after welding to restore ductility.
Welding Recommendations:
- Welding Methods: Shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), submerged arc welding (SAW).
- Use low hydrogen electrodes. Preheat may be required.
- Use a heat input of 20 kJ/in for best results.
- Post-weld and pre-weld heat treatment recommended.
Unlocking the Strength of ASTM A1018 HSLA Steels: Versatile Solutions for Modern Engineering
Customers are often drawn to ASTM A1018 materials, particularly the High-Strength Low-Alloy (HSLA) grades within this specification. These HSLA grades, such as HSLAS Grade 50, HSLAS Grade 55, HSLAS Grade 60, HSLAS Grade 65, HSLAS Grade 70, HSLAS-F Grade 70, HSLAS F Grade 80, HSLAS-F Grade 50, and HSLAS-F Grade 60, offer an enticing blend of strength, formability, and weldability.
The allure of these HSLA steels lies in their superior strength compared to traditional carbon steels, making them ideal for a range of applications, especially structural components. Despite their high strength, these steels maintain excellent formability, allowing for intricate shapes and designs without compromising structural integrity. Additionally, their weldability is a key advantage, facilitating efficient fabrication processes and reducing production costs.
In industries like automotive, construction, and machinery, customers appreciate the versatility of ASTM A1018 HSLA grades. Whether it’s crafting lightweight yet durable automotive frames, constructing robust yet formable building components, or fabricating efficient machinery parts, these steels offer a dependable solution that meets the rigors of modern engineering.
