MATÉRIAUX - · PDF fileDesignation (Bezeichnung) MAHLE 124 G AlSi 12 CuMgNi MAHLE 124...

ANNEXE 4 : MATRIAUX : COMPOSITION ET CARACTRISTIQUES(Version du 27 janvier 2017 (14h01))
AN4.1. Caractristiques des alliages pour pistons
Designation(Bezeichnung)
MAHLE 124 GAlSi 12 CuMgNi
MAHLE 124 PAlSi 12 CuMgNi
MAHLE 142AlSi12Cu3Ni2Mg
MAHLE 174+AlSi12Cu4Ni2Mg
MAHLE Y GAlCu 4 Ni2Mg
Composition % SiCuMgNiFe
MnTiZnV
CrAl
11 ... 130.8 ... 1.50.8 ... 1.30.8 ... 1.3 0.7 0.2 0.2 0.2 0.18
-residual
11 ... 130.8 ... 1.50.8 ... 1.30.8 ... 1.3 0.7 0.2 0.2 0.2 0.18
-residual
17 ... 190.8 ...1.50.8 ...1.30.8 ... 1.3 0.7 0.2 0.2 0.2 0.18
-residual
17 ... 190.8 ...1.50.8 ...1.30.8 ... 1.3 0.7 0.2 0.2 0.2 0.18
-residual
11 ... 132.5 ... 4.00.5 ... 1.21.75 ... 3.0
0.7 0.2 0.2 0.2 0.18
-residual
11 ... 133.0 ... 5.00.5 ... 1.21.0 ... 3.0 0.7 0.2 0.2 0.2 0.18
-residual
23 ... 260.8 ... 1.50.8 ...1.30.8 ... 1.3 0.7 0.2 0.2 0.2 0.18 0.6
residual
0.53.5 ... 4.5
1.25 ... 1.751.75 ... 2.25
0.6 0.2 0.25 0.2 0.18
-residual
Statepermanent mold
castingforged
permanent moldcasting
forgedpermanent mold
castingpermanent mold
casting
Tensile strength Rm(Zugfestigkeit)
N/mm2
20 C150 C250 C350 C
200 ... 250180 ... 230100 ... 15040 ... 65
300 ... 370250 ... 300110 ... 17040 ... 70
180 ... 220170 ... 210100 ... 14060 ... 80
230 ... 300210 ... 260100 ... 16060 ... 80
200 ... 280180 ... 240100 ... 16050 ... 70
200 ... 280-
100 ... 120-
170 ... 210160 ... 200100 ... 14050 ... 80
220 ... 250210 ... 240170 ... 19070 ... 90
Yield point RP 0.2(Dehngrenze)
N/mm2
20 C150 C250 C350 C
190 ... 230180 ... 22070 ... 11020 ... 30
280 ... 340230 ... 28090 ... 12010 ... 30
170 ... 200150 ... 19080 ... 12020 ... 40
220 ... 260200 ... 250100 ... 14030 ... 40
190 ... 250180 ... 22080 ... 12040 ... 60
190 ... 260-
80 ... 110-
170 ... 200130 ... 18090 ... 12035 ... 55
180 ... 210170 ... 200150 ... 17050 ... 70
Elongation at fracture A(Bruchdehnung)
%
20 C150 C250 C350 C
0.1 ... 1.51.0 ... 1.5
2 ... 49 ... 15
1 ... 32.5 ... 4.5
8 ... 1031 ... 35
0.2 ... 1.00.3 ... 1.21.0 ... 2.2
5 ... 7
0.5 ... 1.51 ... 23 ... 5
10 ... 15
0.1 ... 0.50.2 ... 1.01 ... 3.55 ... 13
1-
1.5 ... 2-
0.1 ... 0.5 0.4 0.5 2
0.5 ... 1.00.7 ... 1.2
2 ... 318 ... 25
Itterbeek R. Bureau dEtudes Mcaniques - Annexe 4 : Matriaux Page -An4.1-

Designation(Bezeichnung)
MAHLE 142AlSi12Cu3Ni2Mg
MAHLE 174+AlSi12Cu4Ni2Mg
MAHLE Y GAlCu 4 Ni2Mg
Bending fatigue bw(Biegewechselfestigkeit)
N/mm2
20 C150 C250 C350 C
80 ... 12070 ... 11050 ... 7015 ... 30
110 ... 14090 ... 12060 ... 7015 ... 20
80 ... 11060 ... 9040 ... 6015 ... 30
90 ... 12070 ... 11050 ... 7020 ... 30
90 ... 13070 ... 11050 ... 7030 ... 50
100 ... 110-
50 ... 55-
70 ... 10050 ... 8040 ... 6020 ... 35
70 ... 9065 ... 8550 ... 6015 ... 25
Modulus of elasticity E(Elastizittsmodul)
N/mm2
20 C150 C250 C350 C
80000773007250065000
81000780007400068000
83000790007500070500
84000790007600070000
84000790007500070000
84000-
75000-
90000850008100076000
74000690006500061000
Coefficient of thermalexpansion (Wrmeleitzahl)
W/mK
20 C150 C250 C350 C
155156159164
158162166
-
143147150156
157160163
-
130136142146
130-
142-
135137141147
147152159163
Mean linear thermalexpansion 1/K x 10- 6
(Mittlere lineareWrmeausdehnung)
20 -100 C20 -200 C20 -300 C20 -400 C
2021
21.922.8
-21.4
--
18.619.520.220.8
-20.3
--
19.220.521.121.8
19.2-
21.1-
-19.3
--
-23.1
--
Density (Dichte) kg/m3 x 10- 3
20 C2.7 2.7 2.68 2.68 2.77 2.77 2.65 2.74
Relative wear value(Relative Verschleizahl)
1 1 0.8 0.8 0.95 0.95 0.6 1.3
(Brinelhrte HB 10) 20 C 90 ... 130 90 ... 130 90 ... 130 90 ... 130 100 ... 140 100 ... 140 90 ... 130 90 ... 125
Tableau An4.1. -

AN4.2. Caractristiques des alliages pour axes de pistons
Matriaux utiliss pour laxe du piston et contraintes maximales admissibles
Matriau suivant DIN 73 126
Aciers tremps(Einsatzstahl)
Acier nitrur(Nitriersthal)
L (15Cr3) M (16MnCr5) N (31CrMoV9)
Numro de matire (Werkstoffnummer) 1.7015 1.7131 1.8519
Composition chimique (% en poids) C(Chemische Zusammensetzung in Gew. -%) Si
MnPS
CrMo
V
0.12 ... 0.200.15 ... 0.400.40 ... 0.70 0.035 0.035
0.40 ... 0.90--
0.14 ... 0.190.15 ... 0.401.00 ... 1.30 0.035 0.035
0.80 ... 1.10--
0.26 ... 0.340.15 ... 0.350.40 ... 0.70 0.025 0.025
2.30 ... 2.700.15 ... 0.250.15 ... 0.20
Duret superficielle (Oberflchenhrte) HRC 59 ... 65 59 ... 65 59 ... 65
Rsistance cur (en fonction de lpaisseur de paroi)(Kernfestigkeit) (wanddickenabhangig) N/mm2
700 ... 1500 850 ... 1350 1000 ... 1400
Mean linear thermal expansion 1/K x 10- 6
(Mittlere lineare Wrmeausdehnung) 20 C -200 C20 C -400 C
12.813.7
12.713.9
13.113.8
Coefficient of thermal conductivity 20 C(Wrmeleitzahl) W/mK 200 C
400 C
51.948.241.9
50.048.743.7
46.445.542.3
Modulus of elasticity E ((Elastizittsmodul) N/mm2 210000 210000 214000
Poisson's ratio - 0.27 0.27 0.27
Density (Dichte) kg/m3 x 10- 3 7.80 7.80 7.80
Utilisation (Verwendung)
Standardwerk-stoff fr
Kolbenbolzen
fr hochbean-spruchte
Kolbenbolzen
fr hochbean-spruchte
Kolbenbolzen(Sonderflle)
Contraintes maximales admissibles N/mm2 (Base sur la mthode Schlaefke)
Moteur Otto etMoteur Diesel (pour vhicule particulier)
500 600 -
Moteur Diesel(pour vhicule utilitaire)
D < 120 mm 300 400 500
D = 120 ... 200 mm 260 ... 200 360 ... 260 450 ... 320
D > 200 mm 180 230 280
Tableau An4.2. - Suivant documentation fournie par la firme MAHLE. {Rf. 3} - Kolbenbolzensthle DIN 73 126.

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