We manufacture a comprehensive range of high-performance stainless steel fasteners that can meet the demands of even the most challenging applications. Our team can help you find the optimal BUMAX grade for your specific requirements.
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Browse grades
BUMAX 88 is one of our flagship stock grades that provides higher strength, corrosion resistance and fatigue performance than generic stainless steel fasteners.
BUMAX 109 is one of our flagship stock grades that offers higher strength than A4-100 and is the strongest A4/316 stainless steel fastener on the market.
BUMAX SDX 109 is a super duplex grade with excellent mechanical properties, and exceptional resistance to general crevice, pitting and stress corrosion.
BUMAX DX 129 is a duplex stainless steel grade with very high strength combined with excellent corrosion resistance.
BUMAX DX 149 is an ultra-high-strength duplex stainless steel fastener with excellent corrosion resistance.
BUMAX NITRO 109 is a nitrogen-strengthened austenitic stainless steel that provides superior corrosion resistance and strength for large size bolts.
BUMAX SA is a 6Mo high-alloy austenitic stainless steel for aggressive chloride applications.
BUMAX HE is a high-temperature resistant grade for applications requiring high strength and good oxidation resistance at temperatures up to 700°C.
BUMAX ULTRA 159 is a unique precipitation-hardened stainless steel that provides ultra-high strength in class 15.9, while maintaining outstanding ductility.
Material Grade Comparison v2
Compare performance, specs, and applications across all BUMAX fastener grades
Highest Mechanical Strength
10/10
ULTRA 159 — 1500 MPa TS
Best Corrosion Resistance
9/10
SA — PRE 43
Best Cryogenic Performance
10/10
BUMAX 88 — down to -269°C
Best High-Temp Capability
8/10
HE — up to 700°C
Radar Comparison
Feature Breakdown
Head-to-Head Comparison
Full Comparison Matrix — Rating View
Competitor Cross-Reference
| Standard Grade | BUMAX Equivalent | Why BUMAX is Better |
|---|---|---|
| A2-70 (304) | BUMAX 88 | Higher Mo (2.7 vs 0%), better corrosion, higher yield (640 vs 450 MPa) |
| A4-80 (316) | BUMAX 88 / 109 | Higher Mo (2.7 vs 2.0%), tighter tolerances, full traceability |
| Duplex 2205 | DX 129 | Higher strength (1200 vs 620 MPa TS), same corrosion resistance |
| Super Duplex 2507 | SDX 109 | Same corrosion (PRE 42), better mechanical properties |
| 12.9 Carbon Steel | ULTRA 159 / DX 129 | Corrosion resistant, no coating needed, higher ductility |
| Alloy 718 | HE | Cost-effective alternative for high-temp, similar performance to 700°C |
| 6Mo (254 SMO) | SA | PRE 43, same base material, fastener-optimized |
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We can help you find the optimal solution for your specific requirements.