Home / Grades

Grade Explorer

Every grade on the floor, grouped by family. A grade page lists its alternate names, standards and the product lines that carry it. For the wider metallurgy library - including grades we source on request - see the alloy explorer.

Austenitic stainless

304The general-purpose austenitic stainless for food, dairy and fabrication work.17 lines
304LLow-carbon 304 for heavier welded sections.4 lines
316Molybdenum-bearing grade for better pitting and chemical resistance.16 lines
316LLow-carbon 316 for welded corrosive service.6 lines

Ferritic stainless

3CR12Utility ferritic stainless; a Columbus Stainless trade name (EN 1.4003). Lower cost corrosion resistance for structural work.4 lines

Duplex stainless

2205 duplexHigh-strength duplex for chloride service. Listed pending DUPLEX_GRADES.on request

Carbon and structural steel

EN8Medium-carbon engineering steel for shafts, studs and general machining.2 lines
EN9Higher-carbon engineering steel for wear parts.1 line
S355Structural steel; ST52 is the legacy name buyers still use.12 lines

Alloy engineering steel

EN19Chromium-molybdenum alloy steel for high-strength parts.1 line
EN30Nickel-chromium-molybdenum steel for heavily loaded parts.1 line
EN36Nickel-chromium case-hardening steel.1 line

Aluminium

1050ACommercially pure aluminium for sheet work and forming.3 lines
5083Marine-grade aluminium-magnesium plate alloy.2 lines
6082Structural aluminium alloy for bar, tube and sections.6 lines

Copper alloys

CZ121Free-machining brass for turned parts, fittings and fasteners.1 line
C110High-conductivity copper for electrical work.1 line
PB1Phosphor bronze for bearings, bushes and worm wheels.1 line
PB2Harder phosphor bronze for heavier bearing duty.1 line

Cast iron

GG25Grey cast iron for housings, blocks and machine bases.1 line

Engineering plastics

Nylon 6Cast and extruded polyamide for bushes, rollers and wear parts.1 line
PolypropyleneChemical-resistant, weldable sheet and rod.1 line
Polyethylene HDPETough, low-friction sheet and rod.1 line
PerspexClear acrylic sheet for glazing, covers and sight glass.1 line
VesconiteSelf-lubricating bearing polymer; stocked pending brand confirmation.1 line
OilonOil-filled cast nylon for low-speed high-load wear parts.1 line

The specifications and data on this site are provided for general information only. Verify any real-world project with a qualified metallurgist before relying on these figures. We take no responsibility for the use and application of this information.