What material grade does Ferralium Bolts use?

Ferralium Bolts are manufactured per the applicable ASTM, ASME, DIN, or ISO specification for the material grade. TorqBolt provides material test certificates (MTC) per EN 10204 3.1 or 3.2 with every supply.

What sizes are available for Ferralium Bolts?

TorqBolt manufactures Ferralium Bolts in metric sizes M6 to M100 and imperial sizes 1/4" to 4" diameter, with custom lengths from 10mm to 3000mm. Non-standard sizes are available on request.

Are Ferralium Bolts NACE MR0175 / ISO 15156 certified?

Yes, Ferralium Bolts can be supplied with NACE MR0175 / ISO 15156-2/3 sour service certification when specified at order. Material certificates and test reports are provided.

What is the typical delivery time for Ferralium Bolts?

Standard stock items ship in 1-2 weeks. Custom manufactured Ferralium Bolts typically ship in 4-6 weeks depending on quantity, material availability, and certification requirements.

Do you provide third-party inspection for Ferralium Bolts?

Yes, third-party inspection by TUV, Lloyd's Register, BV, DNV, SGS, and Intertek is available upon request for Ferralium Bolts. Witness testing and stage inspections can be arranged.

Ferralium Bolts Manufacturer & Supplier

Ferralium Bolts Specification

The raw material of these fasteners is classified as Duplex Stainless Steel. Being a PED certified Fasteners Manufacturer by TUV Rheinland,our fasteners are accompanied with EN 10204 3.1/3.2 certification. Ferralium Bolts are available in hot forged,cold forged and bar stock machined conditions depending upon the order quantity.Alloy 255 is a highly alloyed (ferrite-austenite) steel which provides superior corrosion resistance. It has various cost effective applications in chemical, metalurgical, sanitation, pollution contriol industry. Some of the features of alloy 255 are resistance to pitting, crevice corrosion, chloride stress corrosion cracking, ductility, fabricability. It has twice the yeild of austenitic steels, and high fatigue strengths in marine environments. It is widely used in pumps, shafts, valves, down hole applications etc.

Ferralium Bolts Equivalent Designation

UNS Designation	British STD	Werkstoff No.	European STD	Swedish STD	Japanese STD	Forging
S32950	–	1.4507	X2CrNiMoCuN25-6-3	–	–	Sa 182 F61

Surface Treatments & Coatings

Electro Less Nickel Plating Bolts Electro Cadmium Plating Bolts Dacromet 320 500 Coating Bolts Pickled Passivated Fasteners Bolts Silver Plating Bolts Nickel Plating Bolts Electro Zinc Cobalt Plating Bolts Electro Zinc Nickel Plating Bolts Ptfe Fluorocarbon Coating Bolts Aluminizing Bolts Ceramic Filled Fluorocarbon Coating Bolts

Related Products

Duplex 2205 Bolts Duplex 31803 Bolts Super Duplex 32750 Bolts Super Duplex 32760 Bolts Ferralium Bolts Ferralium 255 FG46 Bolts S32205 Bolts S31803 Bolts S32750 Bolts S32760 Bolts S32950 Bolts S32520 Bolts SA 182 F60 Bolts SA 182 F51 Bolts Duplex 2507 Bolts Zeron 100 Bolts Sa 182 F55 Bolts SA 182 F61 Bolts 12 Point Flange Bolt Allen Screw Anchor Bolts Carriage Bolts Custom Bolts Draw Bolts Elevator Bolts Eye Bolts Flange Bolts Hanger Bolts Heavy Hex Head Bolts Hex Head Bolts J Bolts Lag Bolts Machine Bolts Plow Bolts Shoulder Bolts Step Bolts Stove Bolts Stud Bolts Tap Bolts U Bolts Double End Stud Bolts Full Threaded Studs Bolts Half Threaded Studs Bolts Tap End Studs 12 Point Flange Nuts Acorn Nuts Cap Nuts Castle Nuts Coupling Nuts Doomed Nuts Flange Lock Nuts Flex Lock Nuts Heavy Hex Nuts Hex Nuts High Nuts Jam Nuts Kep Nuts Nuts Nylon Lock Nuts Serrated Flange Nuts Slotted Nuts Square Nuts T Nut T Nuts Wing Nuts Belleville Washers Bowed Spring Washers Conical Spring Washers Countersunk Washers Curved Spring Washers Dock Washers Dome Tooth Washers Dome Washers External Lock Washers Fender Washers Finger Spring Washers Flat Washers Hex Washers Hexagonal Washers Internal Lock Washers Lock Washers Ogee Washers Plain Washers Split Lock Washers Spring Washers Square Washers Tab Washers Tooth Lock Washers Torque Washers Wave Spring Washers

Ferralium Bolts — Specifications & Dimensions

Ferralium bolts are externally threaded fasteners with an integral head, manufactured per ASME B18.2.1, ISO 4014/4017, and DIN 933/931. TorqBolt produces Ferralium bolts in metric (M6–M100) and imperial (1/4"–4") diameters with custom lengths from 10 mm up to 3000 mm.

Head Styles Available

Hex head — ASME B18.2.1, the workhorse for general bolting

Heavy hex head — thicker head for high-load joints, ASTM A325 / A490 patterns

Socket head cap (SHCS) — ASME B18.3 / DIN 912, ideal where space is limited

Button head, flat head, countersunk — flush-mount applications

12-point flange — tool-engagement-critical assemblies

Thread & Shank

Ferralium bolts are supplied with full or partial threading. Full-thread (UNC, UNF, ISO metric coarse/fine) for tension-only joints; partial-thread shank for shear loads where the unthreaded grip carries the load. Thread fits per ASME B1.1 (Class 2A) or ISO 965 (6g) by default; tighter Class 3A / 4h6h fits available on request. Engagement length follows the 1.5×D rule for tapped holes; 1.0×D minimum on through-bolting.

Mechanical Performance

Ferralium bolts achieve characteristic tensile strength, yield, and elongation per the source-material spec, with proof-load testing and hardness verification per ASTM F606 / ISO 898-1. Torque-tension calibration is published per ASME PCC-1 for critical joints. Each lot ships with EN 10204 3.1 (or 3.2 on request) certificates listing chemistry, mechanicals, hardness, and dimensional inspection.

Custom Configurations

TorqBolt can produce Ferralium bolts to drawing, with non-standard heads, drilled-shank variants, double-end, captive, or matched-set configurations. Coatings include zinc, PTFE, Xylan, hot-dip galvanized, and electroless nickel. NACE MR0175 / ISO 15156 sour-service certification on request.

Duplex & Super Duplex Stainless Steels

Duplex stainless steels have a roughly 50/50 ferrite-austenite microstructure, doubling the yield strength of austenitic 304/316 grades while improving chloride pitting + stress-corrosion resistance. Duplex is the modern default for offshore platform fasteners, desalination plants, and sour-gas piping where austenitics fail to chloride SCC and martensitics fail to hydrogen embrittlement.

Duplex 2205 (UNS S32205 / S31803) is the standard grade with PREN ~35, suitable for chloride-bearing service to ~250°C. Super Duplex 2507 (S32750) and Zeron 100 (S32760) push PREN to 41-42 with higher Cr+Mo+N, qualifying for the most aggressive seawater + sour-well environments. SA-182 F51 / F53 / F55 / F60 are the ASME forged-flange equivalents.

Phase balance is critical: ferrite content must stay within 35-65% in weld + HAZ to maintain corrosion + impact properties (ASTM A923 testing). Solution anneal at 1040-1100°C followed by water quench locks the duplex microstructure. Fasteners ship per ASTM A276 / A479 with EN 10204 3.1 / 3.2 certs including ferrite count and Charpy impact at -46°C. NACE MR0175 / ISO 15156 sour-service certification is standard.

Ferralium Bolts