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Special steels for aviation and aerospace
Category · 39 grades

Special steels for aviation and aerospace

Special steels for aviation and aerospace are engineered steels designed to provide controlled mechanical properties and reliable performance in demanding service. Their alloying and heat-treatment capabilities support components that require a combination of strength, toughness and fatigue resistance, including aircraft structures and engine parts.

GradeMaterial no.CSiPSMnCr
1.40141.40140,17-0,22≤1,000,0350,03≤1,0012,0-14,0
X15CrNi17-31.40440,12-0,20≤1,000,0350,025≤1,0015,0-18,0
1.43041.4304≤0,12≤1,000,0450,03≤2,0017,0-19,0
S304001.4314≤0,07≤1,000,0450,03≤2,0017,0-19,0
S301001.4324≤0,12≤1,000,0450,03≤2,0016,0-18,0
X3CrNiMoAl13-8-21.4534≤0,05≤0,100,010,008≤0,1012,25-13,25
S303471.4544≤0,08≤1,000,0350,025≤2,0017,0-19,0
X5CrNiCu15-51.4545≤0,07≤1,000,030,015≤1,0015,0-15,5
X5CrNiNb18-101.4546≤0,08≤1,000,0450,03≤2,0017,0-19,0
X5CrNiCuNb17-4-41.4548≤0,07≤1,000,0250,025≤1,0015,0-17,5
GX5CrNiCuNb16-41.4549≤0,060,50-1,000,040,03≤0,7015,5-16,7
S177001.4564≤0,09≤1,000,040,03≤1,0016,0-18,0
S157001.4574≤0,09≤1,000,040,03≤1,0014,0-16,0
S641521.49330,08-0,13≤0,350,030,0250,50-0,9011,0-12,5
X4NiCrTiMoV26-151.4943≤0,06≤1,000,0250,015≤2,0013,5-16,0
GX15CrNiCo21-20-201.4957≤0,20≤1,000,0350,0251,00-2,0020,0-22,5
G931061.59240,14-0,19≤0,400,0350,0350,40-0,601,40-1,70
K444141.59340,15-0,200,15-0,400,0350,0350,40-0,601,80-2,10
K931201.6354≤0,03≤0,100,010,01≤0,10
X2NiCoMo18-121.6355≤0,03≤0,100,010,01≤0,10
X2NiCoMoTi18-12-41.6356≤0,03≤0,100,010,01≤0,10
X2NiCoMo18-9-51.6358≤0,03≤0,100,010,01≤0,10
X2NiCoMo18-8-51.6359≤0,03≤0,100,010,01≤0,10
1.66041.66040,26-0,340,15-0,400,0250,0250,30-0,601,80-2,30
32NiCrMo12-51.66550,29-0,360,15-0,400,0250,0250,25-0,501,20-1,50
1.66571.66570,11-0,17≤0,400,0250,0350,30-0,600,80-1,10
G931501.66580,12-0,170,15-0,400,0150,010,30-0,600,80-1,10
G433701.69440,35-0,400,15-0,350,0150,010,50-0,800,65-0,90
1.69641.6964≤0,03≤0,100,010,01≤0,1011,0-13,0
K912831.69740,29-0,34≤0,100,010,010,10-0,350,90-1,10
25CrMo41.72140,22-0,290,15-0,350,020,0150,50-0,800,90-1,20
J240561.72540,23-0,280,30-0,500,020,0150,50-0,700,80-1,10
15CDV61.77340,12-0,18≤0,200,020,0150,80-1,101,25-1,50
1.77361.77360,12-0,18≤0,200,020,0050,80-1,101,25-1,50
1.77841.77840,38-0,430,80-1,000,0150,010,20-0,404,75-5,25
G615001.81540,47-0,550,15-0,400,0350,0350,70-1,100,90-1,20
K240651.85140,26-0,34≤0,400,0250,0250,40-0,702,30-2,70
1.85441.85440,30-0,370,20-0,500,0250,0250,50-0,801,00-1,30
1.85641.85640,28-0,350,10-0,400,0250,020,40-0,702,80-3,30

Standards covering this category

18

Property ranges

17
PropertyUnitMinMaxGrades
ReHN/mm²3453551
RmN/mm²58014003
A80%19191
ReN/mm²6508352
A5%8122
Z%20502
KCUkJ/m²2509802
HB1662692
HV1754351
rhog/cm³7.767.9539
EGPa1392001
alpha10^-6/K11.713.91
lambdaW/(m·K)30361
Ac1°C7007001
Ac3°C8108101
Ar3°C4004001
Ar1°C3503501

Derived from 39 grades in this category with a recorded value.

Composition range

17
PropertyUnitMinMaxGrades
B%0.0030.011
C%0.030.5539
N%0.010.24
Al%0.051.510
Si%0.1139
P%0.010.04539
S%0.0050.03539
Ti%0.128
V%0.060.69
Cr%0.6522.534
Mn%0.1239
Co%4.25218
Ni%0.32733
Cu%0.554
Nb%0.151.253
Mo%0.155.526
W%231

Derived from 39 grades in this category with a recorded value.

Heat treatment

1
OperationMinTemperature (°C)MaxTemperature (°C)Grades
soft_annealing1