Stainless Steel Angle Bar Size Chart: Equal vs Unequal Angles (ASTM & EN Standards)
Introduction
Stainless steel angle bar is an L-shaped structural profile widely used in fabrication, construction and industrial equipment. Selecting the correct angle size requires understanding leg dimensions, thickness, weight and applicable standards.
This guide provides a practical stainless steel angle bar size chart, including equal angle and unequal angle dimensions, weight references and ASTM & EN standards to help engineers and buyers select the right specification.
Stainless Steel Angle Bar Size Chart
Stainless steel angle sizes are usually specified by leg length × leg length × thickness for equal angles, or long leg × short leg × thickness for unequal angles.
For example:
- 50 × 50 × 5 mm means an equal angle with two 50 mm legs and 5 mm thickness.
- 75 × 50 × 6 mm means an unequal angle with one 75 mm leg, one 50 mm leg and 6 mm thickness.
Equal Stainless Steel Angle Size Chart
| Size (A×A×T) | Thickness | Approx. Weight (kg/m) |
|---|---|---|
| 20×20×3 | 3 mm | 0.88 |
| 25×25×3 | 3 mm | 1.12 |
| 40×40×4 | 4 mm | 2.42 |
| 50×50×5 | 5 mm | 3.77 |
| 75×75×6 | 6 mm | 6.76 |
| 100×100×10 | 10 mm | 15.00 |
Unequal Stainless Steel Angle Size Chart
| Size (A×B×T) | Thickness | Approx. Weight (kg/m) |
|---|---|---|
| 40×20×4 | 4 mm | 1.85 |
| 50×30×5 | 5 mm | 3.06 |
| 60×40×5 | 5 mm | 3.84 |
| 75×50×6 | 6 mm | 5.60 |
| 100×75×8 | 8 mm | 10.60 |
How to Read Stainless Steel Angle Dimensions
Understanding stainless steel angle dimensions is important for correct material selection. Angle bar specifications usually include leg size, thickness and length.
| Specification | Meaning | Example |
|---|---|---|
| Leg Size | Width of each angle leg | 50×50 mm equal angle |
| Thickness | Material thickness of the angle profile | 5 mm |
| Length | Standard or customized bar length | 6 meters |
Equal Angle vs Unequal Angle: Which One Should You Choose?
The choice between equal and unequal stainless steel angles depends mainly on structural requirements, installation space and load direction.
| Comparison | Equal Angle | Unequal Angle |
|---|---|---|
| Shape | Two legs have the same dimensions | One leg is longer than the other |
| Strength Distribution | Balanced support in both directions | Optimized for directional loading |
| Weight Efficiency | Standard structural solution | Can reduce material usage in some designs |
| Common Applications | Frames, brackets, supports | Structural reinforcement and engineering projects |
When to Use Equal Stainless Steel Angle
Equal angles are commonly selected when symmetrical support and simple fabrication are required. They are widely used in equipment frames, architectural structures and general fabrication work.
When to Use Unequal Stainless Steel Angle
Unequal angles are preferred when a project requires different leg lengths, better load distribution or reduced structural weight. They are often used in engineering structures where space optimization is important.
Stainless Steel Angle Weight per Meter
Weight per meter is an important factor when estimating material cost, transportation requirements and structural load. Stainless steel angle weight depends on leg dimensions, thickness and material density.
Approximate Weight Calculation:
Weight (kg/m) = Cross-sectional Area × Stainless Steel Density
For stainless steel, the commonly used density value is approximately 7.93 g/cm³.
Example: 50×50×5 Stainless Steel Angle
A 50×50×5 mm stainless steel equal angle weighs approximately 3.77 kg per meter.
For a standard 6-meter length:
3.77 kg/m × 6 m = approximately 22.62 kg per piece.
Factors Affecting Stainless Steel Angle Selection
| Factor | Selection Consideration |
|---|---|
| Load Requirement | Higher loads usually require larger dimensions and thicker sections |
| Installation Space | Unequal angles may be better where space is limited |
| Corrosion Environment | Select stainless steel grade according to exposure conditions |
| Fabrication Method | Consider cutting, welding and machining requirements |
How to Read Stainless Steel Angle Dimensions
Understanding stainless steel angle dimensions is important for correct material selection. Angle bar specifications usually include leg size, thickness and length.
| Specification | Meaning | Example |
|---|---|---|
| Leg Size | Width of each angle leg | 50×50 mm equal angle |
| Thickness | Material thickness of the angle profile | 5 mm |
| Length | Standard or customized bar length | 6 meters |
Equal Angle vs Unequal Angle: Which One Should You Choose?
The choice between equal and unequal stainless steel angles depends mainly on structural requirements, installation space and load direction.
| Comparison | Equal Angle | Unequal Angle |
|---|---|---|
| Shape | Two legs have the same dimensions | One leg is longer than the other |
| Strength Distribution | Balanced support in both directions | Optimized for directional loading |
| Weight Efficiency | Standard structural solution | Can reduce material usage in some designs |
| Common Applications | Frames, brackets, supports | Structural reinforcement and engineering projects |
When to Use Equal Stainless Steel Angle
Equal angles are commonly selected when symmetrical support and simple fabrication are required. They are widely used in equipment frames, architectural structures and general fabrication work.
When to Use Unequal Stainless Steel Angle
Unequal angles are preferred when a project requires different leg lengths, better load distribution or reduced structural weight. They are often used in engineering structures where space optimization is important.
Stainless Steel Angle Weight per Meter
Weight per meter is an important factor when estimating material cost, transportation requirements and structural load. Stainless steel angle weight depends on leg dimensions, thickness and material density.
Approximate Weight Calculation:
Weight (kg/m) = Cross-sectional Area × Stainless Steel Density
For stainless steel, the commonly used density value is approximately 7.93 g/cm³.
Example: 50×50×5 Stainless Steel Angle
A 50×50×5 mm stainless steel equal angle weighs approximately 3.77 kg per meter.
For a standard 6-meter length:
3.77 kg/m × 6 m = approximately 22.62 kg per piece.
Factors Affecting Stainless Steel Angle Selection
| Factor | Selection Consideration |
|---|---|
| Load Requirement | Higher loads usually require larger dimensions and thicker sections |
| Installation Space | Unequal angles may be better where space is limited |
| Corrosion Environment | Select stainless steel grade according to exposure conditions |
| Fabrication Method | Consider cutting, welding and machining requirements |
ASTM and EN Standards for Stainless Steel Angle Bar
Stainless steel angle bars are commonly supplied according to ASTM and EN standards. These standards define material requirements, dimensional accuracy, mechanical properties and inspection requirements.
When purchasing stainless steel angles for engineering projects, buyers should confirm not only the size but also the applicable material standard.
| Standard | Description | Application |
|---|---|---|
| ASTM A276 | Standard specification for stainless steel bars and shapes | General industrial and fabricated components |
| ASTM A479 | Stainless steel bars and shapes for pressure applications | Pressure equipment and industrial systems |
| EN 10056-1 | Dimensions and tolerances of equal and unequal steel angles | European structural applications |
| EN 10056-2 | Tolerance requirements for steel angles | Engineering and fabrication projects |
304 vs 316 Stainless Steel Angle Bar Selection
304 and 316 stainless steel are the most common grades used for angle bars. The correct choice depends on corrosion exposure, environment and service requirements.
| Grade | Characteristics | Typical Use |
|---|---|---|
| 304 Stainless Steel Angle | Good corrosion resistance, excellent weldability and balanced cost | Indoor structures, equipment frames, general fabrication |
| 316 Stainless Steel Angle | Higher chloride corrosion resistance due to molybdenum addition | Marine, coastal and chemical environments |
Common Applications of Stainless Steel Angle Bar
Stainless steel angle bars are selected for applications requiring corrosion resistance, structural support and clean appearance.
- Architectural structures, railings and decorative frames.
- Food processing equipment and sanitary structures.
- Industrial equipment supports and machine frames.
- Marine structures requiring corrosion-resistant materials.
- Custom fabricated brackets and supports.
FAQ
What are common stainless steel angle bar sizes?
Common stainless steel angle sizes include 20×20×3 mm, 40×40×4 mm, 50×50×5 mm, 75×75×6 mm and larger structural sizes. Custom dimensions are also available.
What is the difference between equal and unequal stainless steel angles?
Equal angles have two legs with the same dimensions, while unequal angles have different leg lengths. Equal angles provide balanced support, while unequal angles are often selected for weight optimization and directional loading.
How is stainless steel angle weight calculated?
Stainless steel angle weight is calculated based on cross-sectional area and stainless steel density. Manufacturers usually provide standard weight tables in kg per meter.
Which stainless steel grade is better for marine applications?
316 stainless steel angle is generally preferred for marine and coastal applications because it provides improved resistance to chloride corrosion compared with 304 stainless steel.
Can stainless steel angle bars be customized?
Yes. Stainless steel angle bars can be customized in grade, dimensions, thickness, length, surface finish and inspection requirements according to project specifications.
Stainless Steel Angle Bar Supply from SAKY STEEL
SAKY STEEL supplies stainless steel angle bars in various sizes, grades and finishes for industrial, architectural and fabrication applications.
Available materials include 304, 304L, 316 and 316L stainless steel angles with customized dimensions according to customer requirements.
Products can be supplied with material certificates, dimensional inspection and customized cutting service.
For quotation requests, please provide:
- Stainless steel grade
- Angle size and thickness
- Length requirement
- Quantity
- Application
Conclusion
Choosing the correct stainless steel angle bar requires understanding dimensions, weight, standards and application conditions. Equal angles are suitable for balanced support, while unequal angles provide more flexibility for engineering designs.
By selecting the correct size, grade and specification, stainless steel angle bars can provide reliable performance for structural, industrial and architectural applications.