# Round bar (EN 10060 / round rod)

Solid round stock at any diameter and length: EN 10060 hot-rolled round steel bars and plain round rod.

## Geometry

A cylinder of diameter **d** (`diameter`) and length **l** (`length`), axis along +Z, one end face on the XY plane
centred on the origin. The diameter is the nominal one; rolling tolerances are not modelled.

## Parameters

| Parameter | Meaning |
|---|---|
| `diameter` | Diameter d, mm |
| `length` | Length l, mm |
| `material` | `steel` (S235JR, EN 10025-2), `stainless-304` (1.4301), `aluminium-6061` (6061-T6), `brass` |

## Source

EN 10060:2003, *Hot rolled round steel bars for general purposes — Dimensions and tolerances on shape and
dimensions* (current edition), read from the SIST EN 10060:2004 preview (= EN 10060:2003, <https://cdn.standards.iteh.ai/samples/19761/9fbfa243bc214b9e913271bb13a2cff8/SIST-EN-10060-2004.pdf>): a round bar is
designated by its nominal diameter d, the only dimension of the section. Clause 5 (p. 5): bars are delivered "with
the specified dimensions range given in Table 1"; Table 1 (pp. 6-7) lists the preferred diameters 10 to 250 mm and its
footnote a admits diameters above 250 mm. EN 10060 presets therefore start at 10 mm; the catalogue's 6 and 8 mm
"EN 10060" bars are below the standard's range and have no preset. EN 10060 bars carry no length of their own (mill
lengths): their presets are 1000 mm pieces. Plain round rod presets: diameter × length as designated, no standard.

Preset list: sizes of the step.parts catalogue (MIT), see `library/NOTICE.md`.