Plan a cut

Reference

Alloys and densities

Reference values with their source. They are your requested specification, never a statement of what ERA GOLD stocks.

Bar ends in five metals

Pick a grade, not just a family

Aluminium bronze C95400 is about 16 % lighter than bronze C93200, so the kilograms change with the choice.

The densities are reference values with their source named in the alloy list. You can change them in Shop rules if your supplier gives another figure.

The app never says that ERA GOLD stocks a grade. When you choose one, it writes a question for ERA GOLD into the request instead.

A scale is not an alloy test. Brass, bronze and copper differ by only a few per cent in density, so ask for the mill certificate when the grade matters.

Source: Copper Development Association, alloy data (C11000, C26000, C36000, C93200, C95400) – read it

Copper

Copper C11000 (ETP)

8,91 g/cm³

Conductive flat and round parts, heat transfer parts.

Ask ERA GOLD Copper C11000 (ETP): is a mill certificate available?

Source: Copper Development Association – read it

Brass

Brass C36000 (free-cutting)

8,50 g/cm³

Turned fittings and small machined parts. It contains 2,5–3,0 % lead.

Ask ERA GOLD Turned brass: is the bar C36000 free-cutting brass (2,5–3,0 % lead)? If the part touches drinking water or food, which alloy should we use?

Source: Copper Development Association – read it

Brass C26000 (70/30)

8,53 g/cm³

Formed and drawn parts.

Ask ERA GOLD Brass C26000 (70/30): is this the brass you would supply, and in which temper?

Source: Copper Development Association – read it

Bronze

Bronze C93200 (SAE 660)

8,91 g/cm³

Bushings and plain bearings.

Ask ERA GOLD Bronze bushing: SAE 660 (C93200, 8,91 g/cm³) or aluminium bronze (C95400, 7,45 g/cm³)? The kilograms change by about 16 %.

Source: Copper Development Association – read it

Aluminium bronze C95400

7,45 g/cm³

Heavy-duty bushings and wear parts.

Ask ERA GOLD Bronze bushing: SAE 660 (C93200, 8,91 g/cm³) or aluminium bronze (C95400, 7,45 g/cm³)? The kilograms change by about 16 %.

Source: Copper Development Association – read it

Aluminium

Aluminium 6061

2,70 g/cm³

Machined parts and plate.

Ask ERA GOLD Aluminium bar to machine: 6061, or 6063 (mostly an architectural profile)?

Source: Wikipedia (ASM data) – read it

Aluminium 6063

2,69 g/cm³

Mostly architectural profiles.

Ask ERA GOLD Aluminium bar to machine: 6061, or 6063 (mostly an architectural profile)?

Source: Wikipedia (ASM data) – read it

Aluminium 5052

2,68 g/cm³

Sheet and plate for bending.

Ask ERA GOLD Aluminium sheet or plate in 5052, 1100 or 3003: which grade and temper would you supply?

Source: Wikipedia (ASM data) – read it

Aluminium 1100

2,71 g/cm³

Soft sheet.

Ask ERA GOLD Aluminium sheet or plate in 5052, 1100 or 3003: which grade and temper would you supply?

Source: Alloys International – read it

Aluminium 3003

2,73 g/cm³

Sheet for forming.

Ask ERA GOLD Aluminium sheet or plate in 5052, 1100 or 3003: which grade and temper would you supply?

Source: Alloys International – read it

Steel

Steel 1020

7,85 g/cm³

General machined and welded parts.

Ask ERA GOLD Steel bar: 1020, 1045, or 4140 supplied quenched and tempered?

Source: Colombian steel catalogue density factor (La Campana 2026)

Steel 1045

7,85 g/cm³

Shafts and pins.

Ask ERA GOLD Steel bar: 1020, 1045, or 4140 supplied quenched and tempered?

Source: Colombian steel catalogue density factor (La Campana 2026)

Steel 4140

7,85 g/cm³

Higher-strength shafts and tooling.

Ask ERA GOLD Steel bar: 1020, 1045, or 4140 supplied quenched and tempered?

Source: Colombian steel catalogue density factor (La Campana 2026)

Steel A36 (structural)

7,85 g/cm³

Flat bar, angle and plate.

Ask ERA GOLD Steel A36: in which forms (flat bar, angle, plate) would you supply it?

Source: Colombian steel catalogue density factor (La Campana 2026)

Stainless

Stainless 304

7,90 g/cm³

General stainless parts.

Ask ERA GOLD Stainless: 304 or 316?

Source: Wikipedia (SAE 304) – read it

Stainless 316

8,00 g/cm³

Stainless for wetter or saltier service.

Ask ERA GOLD Stainless: 304 or 316?

Source: Combined Metals 316L data sheet – read it

Next

Plan a cut list

List the parts and the offcuts you already have. The planner works in your browser and keeps nothing.

Open the cut plannerWhat to ask ERA GOLD