International standard · ISO

Cu-FRHC

ISO 1635:1974 — ISO 1635

Mechanical properties

value range by condition
Tensile strength Rm290–370 MPaElongation A10 %Wrought products, Half hardened +HB, d <= 100 mm; w t <= 6 mm +WT - wall thicknessTensile strength Rm250–290 MPaElongation A20 %Wrought products, Quarter hardened +HA, d <= 200 mm; w t <= 10 mm +WT - wall thicknessElongation A≥35 %HardnessHVsteel tubes, Annealed +O

Physical properties

vs. temperature
Resistivity Ω·mm²/m
0.020 – 0.020°C
Density kg/dm³
8.90 – 8.90°C

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
Wrought products, Half hardened +HB, d <= 100 mm; w t <= 6 mm +WT - wall thickness290–37010
Wrought products, Quarter hardened +HA, d <= 200 mm; w t <= 10 mm +WT - wall thickness250–29020
steel tubes, Annealed +O≥35HV ≤65

Physical properties

Elastic modulusMean thermal expansionThermal conductivitySpecific heatResistivityDensityPoisson's ratio
0.028.90

Similar grades

GradeRegionSystem
T11050ChinaGB
Cu-a2FranceAFNOR NF
CR005AEuropean UnionEN
T2ChinaGB
CW005AEuropean UnionEN
Cu-FRHCEuropean UnionEN
Cu-OFInternational standardISO
Cu-FRTPInternational standardISO
Cu-ETPInternational standardISO