Material Grades

OEM Fasteners

Material grading and mechanical compositions for Wulfrun’s OEM fasteners

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1.4923 - X22CRMOV12-1

Chemical compositions and mechanical properties for 1.4923 – X22CRMOV12-1.

Chemical compositions - 1.4923 - X22CRMOV12-1

1.4923 steel chemical element% present
Carbon (C)0.18 to 0.24%
Manganese (Mn)0.40 to 0.90%
Silicon (Si) [Max]≤ 0.50%
Chromium (Cr)11.0 to 12.5%
Vanadium (V)0.25 to 0.35%
Molybdenum (Mo)0.80 to 1.20%
Nickel (Ni)0.30 to 0.80%
Phosphorus (P) [Max]0.025%
Sulphur (S) [Max]0.015%

Mechanical properties - 1.4923 - X22CRMOV12-1
Rp0.2 0.2% proof strength (MPa) (+QT)600
KV - Impact energy (J) (+QT)+20° 27
A - Min. elongation at fracture (%) (+QT)14
Z - Reduction in cross section on fracture (%) (+QT)40
Brinell hardness (HBW): (+A)302

1.7729 - DUREHETE 1055 - 20CRMOVTIB4-10

Chemical compositions and mechanical properties for 1.7729 – DUREHETE 1055 – 20CRMOVTIB4-10.

Chemical compositions - 1.7729 - DUREHETE 1055 - 20CRMOVTIB4-10

Base Element; Fe(Iron)
ElementMinMax
B (Boron)0.001 0.01%
C(Carbon) 0.170.23%
Cr(Chromium)0.91.2%
Mn(Manganese) 0.35 0.75%
Mo(Molybdenum)0.91.1%
P(Phosphorus- 0.02%
S(Sulphur)-0.2%
Si(Silicon) 0.10.35%
Ti(Titanium) 0.07 0.15%
V (Vanadium) 0.6 0.8%

Mechanical properties - 1.7729 - DUREHETE 1055 - 20CRMOVTIB4-10

Heat Treatment; Quenched and tempered condition (970-1010 degs C, oil quench or water quench + 660-730 degs C, for not less than 2h air cool). Unless otherwise stated.
Mechanical Property MinMax
Ultimate Tensile Strength (UTS) 8201000 MPa
0.2% Proof Stress -660 MPa
Elongation 15%-
Gauge Length 5.65vSo -
Izod Impact = Room Temp 0.292 kJ/m^2 -

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