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1.4418

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ER 409Cb A 534 18CrNiMo7-6
#418

Description

European EN SA/EN 10028-7, 1.4418 Specialsteel Specification for flat products made of steels for pressure purposes - Part 7: Stainless steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 1.4418
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 1.4418 Precipitation-Hardening EN European Specification for flat products made of steels for pressure purposes - Part 7: Stainless steels

Chemical composition(mass fraction)(wt.%) of the 1.4418

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo W
≤0.20 ≤0.50 ≤1.00 ≤ ≥ ≤ ≥ ≤ ≥ ≤12.50 ≤ ≥ ≤ ≥ ≤ ≥ ≤remaining ≤ ≥ ≤ ≥ ≤3.00

Mechanical Properties of steel grade 1.4418

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
328 (≥) 475 (≥) 14 13 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical Properties of steel grade 1.4418

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
24 - -     0.42 -  
743 343 - 32.3 413   -  
338 - 34 41.2   311 234

Heat Treatment of steel grade 1.4418

Heat treated : 1765°C - 1341°C

Technological Curves of steel grade 1.4418

1.4418 TTT Curves

1.4418 TTT Curves

Cross Reference Table (Equivalent Grade) of 1.4418

Grade Standard Country Application
1.4418
1.4418
S41800
S41800
418
S41800
AMS 6418F
UNS W50418
UNS W21418
SCM418
SCM418H
SCM418TK
418(S41800)
Type418(GreekAscollOy)
S41800
UNS S41800
1.4418
1.4418
GH4180
GH4180

Relevant standard of 1.4418

SA/EN 10028-7 Specification for flat products made of steels for pressure purposes - Part 7: Stainless steels SA-EN-10028-7.pdf
ER 409Cb A 534 18CrNiMo7-6
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