R290

R290

A copper temper designated in BS EN standards, R290 stands for "hard" temper of copper tubes. Copper tubes of R290 material condition are delivered in straight length, in the meanwhile, the mechanical properties, tolerances and carbon residues are different with R220 and R250 temper.

Mechanical Properties of R290 Copper Tubes

  • Norminal outside diameter: 6mm min., 267mm max.
  • Tensile strength: 290 MPa min. (1 MPa is equivalent to 1 N/mm2)
  • Elongation: 3% min.
  • Hardness: min. 100

Tolerances on outside diameter

Norminal outside diameterTolerances on norminal diameter

applicable to mean diameter

(all material conditions)

applicable to any diameter

(R290 hard material condition)

applicable to any diameter

(R250 half hard material condition)

6mm ≤ d ≤ 18mm±0.04±0.04±0.09
18mm ﹤ d ≤ 28mm±0.05±0.06±0.10
28mm ﹤ d ≤ 54mm±0.06±0.07±0.11
54mm ﹤ d ≤ 76.1mm±0.07±0.10±0.15
76.1mm ﹤ d ≤ 88.9mm±0.07±0.15±0.20
88.9mm ﹤ d ≤ 108mm±0.07±0.20±0.3
108mm ﹤ d ≤ 159mm±0.2±0.7±0.4
159mm ﹤ d ≤ 267mm±0.6±01.5n/a

Quantitative and qualitative specification for carbon residues

Norminal outside diameter

d

mm

Material condition

Quantitative method - total carbon

max.

mg/dm2

Qualitative method - carbon film test
from 10 up to and including 54R220 (annealed)0.20yes
R250 (half hard)0.20yes
R290 (hard)0.20yes
over 54R250 (half hard)0.20yes
R290 (hard)1.0no

R290 Product List

Part NumberOutside DiameterWall ThicknessTheoretcial Weight
Part#: EN1057ZG8AYT | BS EN1057 | Straight pipe | |R290 | Plumbing Copper Tube
8.00mm0.60mm0.12kg/m
Part#: EN1057ZG6CYT | BS EN1057 | Straight pipe | |R290 | Plumbing Copper Tube
6.00mm1.00mm0.14kg/m
Part#: EN1057ZG6BYT | BS EN1057 | Straight pipe | |R290 | Plumbing Copper Tube
6.00mm0.80mm0.12kg/m
Part#: EN1057ZG6AYT | BS EN1057 | Straight pipe | |R290 | Plumbing Copper Tube
6.00mm0.60mm0.09kg/m

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