1.0729 Structural Steel

1.0729 - Specification & Application

this quality is specially designed for the production of parts of delicate use such as automotive, watch and micro-motor industries, mechanical constructions, jig construction or settings.

Chemical composition(wt.%) of 1.0729 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.65 0.75
Si 0.10 0.40
Mn 0.50 0.90
P - 0.07
S 0.15 0.25
Fe - Bal

1.0729 - Detail

Distinctive feature & main attribute: an unalloyed free cutting mild steel, added with lead and sulphur, showing an excellent machinability.
Use & application range: this quality is specially designed for the production of parts of delicate use such as automotive, watch and micro-motor industries, mechanical constructions, jig construction or settings.

Free Cutting High Carbon Steel


Mechanical properties of grade 1.0729

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
274 (≥) 237 (≥) 33 34 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical properties of grade 1.0729

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
875 (≥) 944 (≥) 31 44 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 444
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
169 412 144

Equivalent Grade

Equivalent Products

We can customize the production of 1.0729 grade, contact us for the best solution.
sales@specificsteel.com