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AFNOR XC18S Air 9160/C Details

XC18S Air 9160C wrought steels used in aeronautical constructions

XC18S is a simple structural carbon steel used in the production of low-load machine parts and structures with good weldability, not requiring high strength properties in a heat-treated state.In the annealed state, the steel is characterized by good machinability, while in the normalized state, the material shows a much better susceptibility to mechanical cutting.

XC18S steel is supplied mainly in the form of round bars, is intended for connecting rods, connectors, shafts, overhead cranes, bolts, pins, bushings, control shafts, axles, keys, rivets, wedges and hubs.

AFNOR XC18S Air 9160/C Standard Download

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XC18S Air 9160/C Application:wrought steels used in aeronautical constructions
Category Type Grade Designations
Grades Aviation and Aero Steel XC18S Air 9160/C France - AFNOR , AIR 9160 C - wrought steels used in aeronautical constructions
EN 10083-2 - Quenched and tempered steels. Technical delivery conditions for unalloyed quality steels
EN 10132-3 -
EN 10297-1 -
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤) Similar Remarks
C 0.15 0.22
Si - 0.25
Mn 0.45 0.65
P - 0.035
S - 0.035
Mechanical properties of grade XC18S Air 9160/C
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)
275 (≥) 473 (≥) 44 11 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 244
Physical properties of grade XC18S Air 9160/C
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
394 (≥) 554 (≥) 34 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 422
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
665 589 961
XC18S Air 9160/C 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
XC18S Air 9160/C AFNOR France
wrought steels used in aeronautical constructions