A4-80 Round Bar Supplier
Looking for A4-80, ISO 3506-1 or high tensile stainless steel round bars?
WTE PowerSteel is a European supplier and stockholder of A4-80 stainless steel round bars for manufacturing corrosion-resistant high-strength fasteners. We supply certified round bars with full material traceability, EN 10204 3.1 certification and fast worldwide delivery.
A4-80 is a high-strength austenitic stainless steel fastener grade specified by ISO 3506-1. It is typically manufactured from molybdenum-alloyed stainless steels comparable to AISI 316 / 316L, where the required mechanical properties are achieved by cold working rather than heat treatment. The designation 80 indicates a minimum tensile strength of 800 MPa for finished fasteners.
A4-80 is widely used for manufacturing stud bolts, threaded rods, hex bolts, socket screws and other corrosion-resistant fasteners for marine, offshore, chemical processing, food processing and power generation industries. It combines excellent corrosion resistance with significantly higher mechanical strength than standard A4-70 fasteners.
Why Choose A4-80?
Compared with standard A4-70 stainless steel fasteners, A4-80 provides higher tensile strength while maintaining excellent corrosion resistance in chloride-containing and aggressive industrial environments. It is widely specified where both corrosion resistance and high mechanical performance are required.
Key Benefits
- Minimum tensile strength of 800 MPa
- Excellent corrosion resistance
- Excellent chloride resistance
- High mechanical strength
- Excellent fatigue resistance
- Suitable for marine environments
- Suitable for chemical processing
- Non-heat-treated strength achieved by cold working
- Long service life
- Ideal for corrosion-resistant fasteners
Typical Applications
A4-80 is commonly used for manufacturing:
- Stud bolts
- Threaded rods
- Hex bolts
- Socket head cap screws
- Anchor bolts
- Marine fasteners
- Offshore fasteners
- Chemical processing fasteners
- Food processing fasteners
- Precision CNC machined components
- Corrosion-resistant fasteners
- High-strength stainless steel fasteners
Industries Served
Our customers use A4-80 in:
- Marine
- Offshore
- Chemical Processing
- Food & Beverage
- Power Generation
- Water Treatment
- Petrochemical
- Industrial Equipment Manufacturing
Available Product Forms
We supply:
- Round Bars
- Peeled Bars
- Bright Bars
- Cold Drawn Bars
- Thread Rolling Bars (TRB)
- Cut-to-Length Pieces
Available diameters and lengths upon request.
Inspection & Certification
Material can be supplied with:
- ISO 3506-1
- EN 10204 3.1 Inspection Certificate
- EN 10204 3.2
- PMI (Positive Material Identification)
- Ultrasonic Testing (UT)
- Customer-specific inspection requirements
International Designations
This material is also known as:
- A4-80
- ISO 3506-1 A4-80
- High Tensile Stainless Steel
- AISI 316 (base material)
- AISI 316L (base material)
- 1.4401 (base material)
- 1.4404 (base material)
Frequently Asked Questions
What is A4-80 stainless steel?
A4-80 is a high-strength stainless steel fastener property class defined by ISO 3506-1. It is generally produced from molybdenum-alloyed austenitic stainless steels comparable to AISI 316 or 316L, with the required strength achieved by cold working.
What is the difference between A4-70 and A4-80?
Both grades offer excellent corrosion resistance and are based on similar austenitic stainless steels. The main difference is mechanical strength. A4-80 provides a minimum tensile strength of 800 MPa, while A4-70 provides 700 MPa, making A4-80 the preferred choice for more highly loaded fastening applications.
Is A4-80 suitable for marine applications?
Yes. Thanks to its molybdenum-alloyed stainless steel composition, A4-80 provides excellent resistance to seawater, chlorides and many aggressive industrial environments, making it widely used for marine, offshore and chemical processing applications.
Do you stock A4-80 round bars?
Yes. WTE PowerSteel supplies A4-80 stainless steel round bars from European stock. Please contact our sales team for current stock availability, dimensions and delivery times.
Can you supply cut-to-length material?
Yes. We supply both full-length bars and precision cut-to-length pieces according to customer requirements.
Why Choose WTE PowerSteel?
WTE PowerSteel is a European supplier and stockholder of stainless steels, heat-resistant steels and nickel alloys for fastener manufacturers, marine, offshore, chemical processing and industrial applications. We supply A4-80 stainless steel round bars with full material traceability, EN 10204 3.1 certification, fast quotations, Thread Rolling Bars (TRB), cut-to-length service and worldwide delivery.
