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DIN 1.0729 Details

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


DIN 1.0729 Standard Download

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1.0729 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.
Category Type Grade Designations
Grades Structural Steel 1.0729 Germany - DIN ,
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤)
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
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)
165 (≥) 647 (≥) 44 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
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
924 (≥) 951 (≥) 24 43 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 231
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
158 578 456
1.0729 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
1.0729 DIN Germany
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.

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