United States · ASTM

F1058 Grade 2

ASTM F1058:2008 — Standard Specification for Wrought 40Cobalt-20Chromium-16Iron-15Nickel-7Molybdenum Alloy Wire and Strip for Surgical Implant Applications (UNS R30003 and UNS R30008)

Chemical composition

wt% · log scale
0.00010.0010.010.1110100Be0.001C0.15Co39 – 42Cr18.5 – 21.5Mn1 – 2Mo6.5 – 7.5Ni15 – 18P0.015S0.015Si1.2
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥1450 MPaTensile strength Rm≥2275 MPaWires, Cold worked and aged +CW+A, > 0.02 <= 0.12 mmTensile strength Rm≥2000 MPaWires, Cold worked and aged +CW+A, > 0.12 <= 1 mmYield strength Rp0.2≥1380 MPaTensile strength Rm≥1965 MPaWires, Cold worked and aged +CW+A, > 1 <= 1.5 mmYield strength Rp0.2≥1380 MPaTensile strength Rm≥1895 MPaWires, Cold worked and aged +CW+A, > 1.50 <= 2.00 mm

Chemical composition

ElementminmaxSimilarRemarks
Be0.001
C0.15
Co3942
Cr18.521.5
Fe​​Bal​​
Mn12
Mo6.57.5
Ni1518
P0.015
S0.015
Si1.2

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
Wires, Cold worked and aged +CW+A, > 0.02 <= 0.12 mm≥1450≥2275
Wires, Cold worked and aged +CW+A, > 0.12 <= 1 mm≥2000
Wires, Cold worked and aged +CW+A, > 1 <= 1.5 mm≥1380≥1965
Wires, Cold worked and aged +CW+A, > 1.50 <= 2.00 mm≥1380≥1895
Wires, Cold worked and aged +CW+A, > 2 <= 2.5 mm≥1345≥1895
Wires, Cold worked and aged +CW+A, > 2.5 <= 3 mm≥1275≥1860
Wires, Cold worked and aged +CW+A, > 3 < d <= 3.5 mm≥1240≥1860
Wires +CW, > 0.02 <= 0.12 mm≥1795
Wires +CW, > 0.12 <= 1 mm≥1655
Wires +CW, > 1 <= 1.5 mm≥1620
Wires +CW, > 1.50 <= 2.50 mm≥1550
Wires +CW, > 2.5 <= 3.5 mm≥1515
annealed≥450≥850≥65 Lo= 50 mm
steel strip, Cold worked and aged +CW+A, <= 0.11 mm≥1725≥2240
steel strip, Cold worked and aged +CW+A, > 0.11 <= 0.4688 mm≥1550≥2170
steel strip, Cold worked and aged +CW+A, > 0.4688 <= 0.62 mm≥1550≥2070≥1
steel strip, Cold worked and aged +CW+A, > 0.62 <= 1.18 mm≥1550≥1895≥1
steel strip, Cold worked and aged +CW+A, > 1.18 <= 1.88 mm≥1105≥1550≥3
steel strip, Cold worked and aged +CW+A, > 1.88 <= 2.5 mm≥690≥1170≥17
steel strip +CW, <= 0.11 mm≥1795
steel strip +CW, > 0.11 <= 0.4688 mm≥1725
steel strip +CW, > 0.4688 <= 0.62 mm≥1655
steel strip +CW, > 0.62 <= 1.18 mm≥1515
steel strip +CW, > 1.18 <= 1.88 mm≥1240
steel strip +CW, > 1.88 <= 2.5 mm≥895