Grades & Alloys
Available Material Grades
All grades available in standard and custom fastener types. Material Test Certificates (MTCs) provided with every order.
MS
Mild Steel
4.6 / 8.8 / 10.9 / 12.9 / EN19 / M40
SS
Stainless Steel
304 / 316 / 316L / 310 / 321 / 410 / 904L
2205
Duplex & Super Duplex
2205 / 2507 / S32750 / S32760
Ti
Titanium
Grade 2 / Grade 5 (6Al-4V)
625
Inconel / Monel
625 / 718 / 825 / 925 / 660 / Monel 400-500
C-22
Hastelloy & Alloys
C-22 / C-276 / C-2000 / Alloy 20 / 286
Stainless Steel (SS) Grades
Our most popular category — corrosion-resistant fasteners for marine, chemical, pharmaceutical and food industries.
| Grade | Composition | Key Properties | Common Applications | Product Range |
|---|---|---|---|---|
| SS 304 | 18% Cr, 8% Ni | Good corrosion resistance, non-magnetic | Food processing, kitchenware, general industrial | Hex Bolts, Nuts, Washers, Studs |
| SS 316 | 16% Cr, 10% Ni, 2% Mo | Superior corrosion resistance, marine-grade | Marine, offshore, chemical, pharmaceutical | Stud Bolts, Eye Bolts, Hex Nuts, All Types |
| SS 310 | 25% Cr, 20% Ni | High temperature resistance up to 1100°C | Furnaces, kilns, boilers, heat exchangers | Hex Bolts, Stud Bolts, Nuts |
| SS 321 | 18% Cr, 9% Ni, Ti stabilized | Weld sensitization resistant, high-temp stable | Aerospace, exhaust systems, high-temp weld joints | Stud Bolts, Hex Bolts, Nuts |
| SS 904L | 25% Cr, 4% Mo, 1.5% Cu | Very high corrosion resistance, especially to sulphuric acid | Chemical processing, oil & gas | Bolts, Studs, Nuts |
Mild Steel (MS) & Carbon Steel Grades
Standard carbon steel and alloy steel fasteners for construction, infrastructure and general industrial use.
| Grade | Standard | Tensile Strength | Applications | Finish Available |
|---|---|---|---|---|
| Grade 4.6 | IS / DIN 931 | 400 MPa min | Light construction, general use | Plain, GI, HDG |
| Grade 8.8 | IS / DIN 931 | 800 MPa min | Structural, bridges, heavy machinery | Plain, Black, ZP, HDG |
| Grade 10.9 | IS / DIN 933 | 1000 MPa min | High-tensile structural, automotive, heavy equipment | Black, Plain, ZP |
| Grade 12.9 | DIN 912 / ISO 898 | 1200 MPa min | Aerospace, high-stress mechanical engineering | Plain, Black |
| ASTM A193 B7 | ASTM A193 | 862 MPa | High-pressure/temperature flange bolting | Plain, Phosphate |
Duplex & Super Duplex
High-strength, high-corrosion-resistance alloys for the most demanding environments — oil & gas, offshore and petrochemical.
| Grade | UNS No. | Key Properties | Applications |
|---|---|---|---|
| Duplex 2205 | S31803 / S32205 | High strength + excellent pitting & crevice corrosion resistance | Petrochemical, heat exchangers, desalination |
| Super Duplex 2507 | S32750 | Outstanding corrosion resistance, very high strength (PREN >40) | Offshore, deep-sea, aggressive chloride environments |
Non-Ferrous & Exotic Alloys
Specialized high-performance materials for extreme environments — oil & gas, aerospace, chemical and pharmaceutical industries.
| Material | Grade / Alloy | Key Properties | Applications |
|---|---|---|---|
| Titanium Gr.2 | TA2 / ASTM B265 | Excellent corrosion resistance, low density, biocompatible | Chemical, Marine, Medical Implants, Aerospace |
| Titanium Gr.5 | Ti-6Al-4V / ASTM F136 | High strength-to-weight, high temp resistance up to 400°C | Aerospace, Defense, Racing, Medical |
| Inconel 625 | UNS N06625 | Outstanding oxidation & corrosion resistance up to 980°C | Offshore, Petrochemical, Jet Engines, Nuclear |
| Inconel 718 | UNS N07718 | High strength at elevated temperatures, precipitation hardened | Gas Turbines, Cryogenic Vessels, Aerospace |
| Monel 400 | UNS N04400 | Excellent resistance to seawater & hydrofluoric acid | Marine, Chemical Processing, HF Acid Plants |
| Monel K500 | UNS N05500 | Age-hardenable, non-magnetic, higher strength than 400 | Pump Shafts, Valve Stems, Marine Drives |
| Hastelloy C-22 | UNS N06022 | Excellent resistance to oxidizing & reducing media | Chemical Reactors, Flue Gas Scrubbers, Pulp & Paper |
| Hastelloy C-276 | UNS N10276 | Outstanding pitting & crevice corrosion resistance | Desulfurization, Waste Treatment, Marine |
| Alloy 20 (CN-7M) | UNS N08020 | Excellent resistance to sulfuric acid across all concentrations | Sulfuric Acid Plants, Food Processing, Pharmaceuticals |
| Nitronic 50 / 60 | UNS S20910 / S21800 | High strength, excellent wear & galling resistance | Pump Shafts, Valve Bodies, Marine Hardware |
| 17-4PH | UNS S17400 | High strength precipitation hardened SS, good corrosion resistance | Aerospace, Petrochemical, Nuclear Waste Handling |
| SMO 254 | UNS S31254 | Very high pitting resistance (PREN>43), excellent in chlorides | Seawater Handling, Bleaching Plants, Food Industry |
| Copper | C11000 / C12000 | Excellent electrical & thermal conductivity, ductile | Electrical, Automotive, Electronics, Grounding |
| Brass | 60/40 (C26000) | Good machinability, decorative, mild corrosion resistance | Plumbing, Instrumentation, Decorative, Valves |
| Aluminum | 6061 / 6082 | Lightweight, natural oxidation resistance, good machinability | Aerospace, Automotive, Marine, Light Structures |
Our Capabilities
Complete Range in All Sizes & Grades
We supply fasteners from 6mm to 150mm diameter, up to 20 ft length, in standard and exotic alloys. All sizes 6mm–150mm, lengths 20 Feet, DIN/ISO/ASTM/BS standards, Zinc Plated, HDG, Black and Self finish.
