304
General fabrication
Widely used for structural frames, brackets, equipment supports and architectural fabrication in moderate environments.
Product form hub · Angle bar
Stainless Steel Angle Bar
Specify stainless steel angle bar by grade, leg dimensions, thickness, equal or unequal geometry, production route, tolerance, finish and length. Use the references below to turn a general request into a clear purchasing specification.
304 / 304L / 316 / 316L
ASTM A276 / A484 route
Equal, unequal, hot-finished or formed
L-section angle bar · product visual
Common grades304 / 304L / 316 / 316L
Common market size20 × 20 to 100 × 100+ mm
Common lengths3 / 4 / 6 m and cut length
Build the specification
01Choose grade
02Set leg dimensions
03Set thickness
04Choose route / finish
05Confirm length / tolerance
06Send RFQ
Product overview
What to define before buying stainless steel angle bar
Angle bar is normally ordered by leg × leg × thickness. A complete specification should also state grade, equal or unequal legs, production route, length, dimensional tolerance, surface condition and any cutting or fabrication requirement.
Material304 / 304L
Common for frames, brackets, supports, architectural work and general corrosion-resistant fabrication.
Material316 / 316L
Often selected for washdown, coastal, food-process and chemical environments requiring improved chloride resistance.
GeometryEqual or unequal angle
Specify both leg dimensions and thickness, for example 50 × 50 × 5 mm or 75 × 50 × 6 mm.
Production routeHot-finished, formed or welded
The route affects corner radius, leg profile, surface appearance, dimensional tolerance and fabrication behavior.
M03 · Grade selection
Choose the grade from corrosion, welding and service requirements
Angle bar is commonly welded, drilled, cut and incorporated into frames or supports. Grade selection should reflect the actual exposure, fabrication process and required corrosion resistance.
304L
Welded fabrication
Low-carbon route commonly selected when welded assemblies require good corrosion performance without post-weld heat treatment.
316 / 316L
Higher corrosion resistance
Common for coastal, washdown, food-process and chemical-service structures where chloride resistance is more important.
321 / project grades
Special service
Selected for specific temperature or project requirements when standard 304 or 316 routes do not match the design basis.
M04 · Technical data
Common stainless steel angle bar size reference
The table below uses practical commercial sizes for early design and RFQ preparation. Exact availability depends on grade, equal or unequal geometry, thickness, production route, finish and order quantity.
| Leg dimensions | Common thickness | Common grade routes | Typical route | Buying note |
|---|---|---|---|---|
| 20 × 20 mm | 3 mm | 304 / 304L / 316 | Formed / hot-finished | Light brackets, trim and compact frames |
| 25 × 25 mm | 3 / 4 mm | 304 / 304L / 316 / 316L | Formed / hot-finished | Common light fabrication section |
| 30 × 30 mm | 3 / 4 mm | 304 / 316L | Formed / hot-finished | General supports and fabricated frames |
| 40 × 40 mm | 4 / 5 mm | 304 / 304L / 316 / 316L | Hot-finished / formed | Common medium fabrication size |
| 50 × 50 mm | 5 / 6 mm | 304 / 304L / 316 / 316L | Hot-finished / formed | Frames, supports and equipment bases |
| 60 × 60 mm | 5 / 6 mm | 304 / 316L | Hot-finished | Confirm leg tolerance and inside radius |
| 65 × 65 mm | 6 / 8 mm | 304 / 316 / 316L | Hot-finished | Medium structural fabrication |
| 75 × 75 mm | 6 / 8 mm | 304 / 316 / 316L | Hot-finished / welded | Heavy frames and support structures |
| 80 × 80 mm | 6 / 8 mm | 304 / 316L | Hot-finished / welded | Project-dependent availability |
| 100 × 100 mm | 8 / 10 mm | 304 / 316 / 316L | Hot-finished / laser welded | Heavy support and fabricated assemblies |
| 120 × 120 mm and larger | 10 mm+ | 304 / 316L / project grades | Hot-finished / welded / fabricated | Large sections are commonly project-specific |
| 75 × 50 mm unequal | 5 / 6 mm | 304 / 316L | Formed / welded | State both legs, thickness and orientation requirement |
Market reference only: stainless angle is commonly specified by leg × leg × thickness. Hot-finished equal angles may have a filleted inside corner and a slightly different profile from sharp-corner formed angles. State the required route, dimensions, thickness, length and tolerance in the RFQ.
M05 · Dimensions and finish
Define the leg geometry, thickness and production route
Two angle bars with the same nominal leg size can still differ in inside radius, outside profile, squareness, thickness tolerance and surface condition depending on the manufacturing route.
Dimensions
- Equal or unequal leg dimensions
- Nominal thickness
- Inside corner radius if critical
- Leg squareness / angle tolerance
- Standard length or cut length
Production route
- Hot-finished / hot-rolled angle
- Cold-formed / press-brake angle
- Laser-welded / fabricated angle
- Custom unequal angle
- Cut, drilled or notched processing
Surface & processing
- Mill / pickled surface
- Brushed or polished visible surfaces
- Sawn / plasma / laser cut ends
- Drilling / slotting / fabrication
- Protected packing for finished surfaces
M06 · Selection guide
Match the angle-bar route to the fabrication and service requirement
General fabrication304 / 304L is a common starting point for frames, brackets, supports and equipment structures in moderate environments.
Frequent welding304L or 316L is commonly preferred for welded assemblies where a low-carbon route helps control sensitization risk.
Coastal / washdown service316 / 316L is often selected when chloride exposure, washdown or more demanding corrosion resistance is expected.
Sharp-corner / custom geometryCold-formed, laser-welded or fabricated angle may be more suitable when exact leg geometry or custom unequal dimensions are important.
Worked example
Example of a clear angle bar specification
A usable request defines leg dimensions, thickness, grade and production route instead of ordering only by a general “stainless angle” description.
Example only
This is a normal buying example, not a live-stock claim. Final requirements should follow the project drawing, load case, corrosion environment and fabrication plan.
ProductStainless steel equal angle bar
Standard routeASTM A276/A276M with ASTM A484/A484M general requirements
Grade316L
Size50 × 50 × 5 mm
Production routeHot-finished or approved equivalent
Length6 m or cut-to-length as required
Order requirementState quantity, destination, surface, cutting, tolerance and document requirements in the RFQ
M08 · Applications
Where stainless steel angle bar is commonly used
Frames & supports
Equipment frames, machine supports, platforms, racks and corrosion-resistant structural assemblies.
Brackets & reinforcement
Mounting brackets, edge reinforcement, corners, guards and fabricated support details.
Food & process equipment
304L and 316L angles are commonly used in fabricated frames, skids and washdown equipment structures.
Architectural fabrication
Visible trim, framing, supports and decorative metalwork where corrosion resistance and finish matter.
Marine / outdoor structures
316 / 316L angle is often considered for more demanding outdoor and chloride-exposed fabricated structures.
General engineering
Jigs, fixtures, platforms, guards, supports and custom assemblies produced by cutting, drilling and welding.
Important limitation: equal leg size and nominal thickness alone do not define the final geometry. Hot-finished and cold-formed angles can differ in inside radius, leg profile, squareness, surface condition and dimensional tolerance. For load-bearing or fit-critical assemblies, use the project drawing and specify the required route and tolerances.
M10 · Standards
Standards and purchasing references
Use the latest project-approved revision and state it on the purchase specification. Standard numbers below are shown as technical references only.
Common stainless bar-and-shape specification that includes hot-rolled or extruded shapes such as stainless steel angles.
General requirements for wrought stainless bars, billets, shapes and forgings, including ordering and dimensional controls used with product specifications.
For formed, laser-welded or custom unequal angles, the project drawing should define leg dimensions, thickness, radius, tolerances and fabrication details.
M11 · FAQ
Stainless steel angle bar FAQ
How is stainless steel angle bar sized?
Angle bar is normally specified by leg × leg × thickness and length, for example 50 × 50 × 5 mm × 6 m. For unequal angle, state both leg dimensions clearly.
What grades are common for stainless angle bar?
304 / 304L and 316 / 316L are the most common corrosion-resistant routes. Grade selection depends on welding, corrosion exposure, temperature and project requirements.
What is the difference between hot-finished and formed stainless angle?
Hot-finished angle typically has a rolled or extruded profile with an inside fillet and production-defined geometry. Formed angle is made from flat material and can provide sharper corners or custom leg combinations.
Can stainless angle bar be supplied in unequal-leg sizes?
Yes. Unequal angle is commonly produced by forming, welding or project-specific routes. State both leg dimensions, thickness, radius and tolerance where fit is important.
Which standards are commonly referenced for stainless angle bar?
ASTM A276/A276M is commonly referenced for stainless bars and shapes, while ASTM A484/A484M provides general requirements. Custom formed or fabricated angles should also follow the project drawing and approved dimensional requirements.
Product details
What buyers usually verify visually
These three areas are ready for your own angle bar photos. Replace only the background images later; the page structure and technical copy can stay unchanged.
Leg geometry & cornerEqual / unequal legs, inside radius, squareness and section profile
Surface & routeHot-finished, formed, welded, brushed or polished appearance
Cut length & packingSawn ends, bundled angles and protection for finished surfaces
Angle bar resources
Continue from specification to purchase
Material hub
Stainless Steel
Review the parent material hub and related stainless steel product forms.
Open stainless steel hub → Technical Technical ResourcesUse standards, comparisons and engineering references to clarify the purchase specification.
Open technical resources → Sourcing Request a QuoteMove from a reviewed specification to a purchasing conversation.
Open RFQ page →M13 · Technical reference
Reference basis for this angle bar guide
The page uses ASTM A276/A276M bar-and-shape requirements, ASTM A484/A484M general requirements and common commercial stainless angle size patterns. Exact dimensions, thickness, radius, tolerance, finish and certification should be confirmed for the actual order.
M14 · RFQ
Request a technical quote
For a faster review, include the grade, equal or unequal leg dimensions, thickness, production route, finish, length, quantity, destination and any cutting or fabrication requirement.
- Grade / material designation
- Equal or unequal leg dimensions
- Thickness, radius / tolerance and finish
- Length / cutting / drilling / fabrication requirement
- Quantity, destination and required documents