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Leghe per alte temperature

LEGHE ALTE TEMPERATURE
Designazione

ACI/ASTM DIN AFNOR UNS Altre
LEGHE Fe-Cr
1.4710 - 1.4710-GX30CrSi 6 - - -
1.4729 A743 CA40 1.4729-GX40CrSi 13 - J91553 -
1.4740 - 1.4740-GX40CrSi 17 - - -
LEGHE Fe-Cr-Ni
A297HC A297 HC 1.4822-GX40CrNi
24-5
- J92605 -
A297HD A297 HD 1.4823-GX40CrNiSi 27-4 - J93005 -
A297HF A297 HF - Z15 CN 8-08-M J92603 -
1.4826 - 1.4826-GX40CrNiSi 22-9 - - -
A297HH A297 HH 1.4837-GX40CrNiSi 25-12 Z40 CN 25-12-M J93503 AISI 309(1)
A297HI A297 HI 1.4846-X40CrNi
25-11
- J94003 -
253MA(2) - 1.4893-X8CrNiN
21-11
- - 53MA(1)
A297HK40 A297 HK40 1.4848-GX40CrNiSi 25-20 Z40 CN 25-20-M J94204 AISI 310(1)
AISI 310S - 1.4840-GX15CrNi
25-20 (2)
- J94302 -
A297HL A297 HL - - N08604 -
24Cr/24NiNb - 1.4855-GX30CrNiSiNb 24-24 - - IN319(3)
LEGHE Fe-Ni-Cr
A297HN A297HN - - J94213 -
A351CT15C A351CT15C 1.4859-GX10NiCrNb 32-20 - N08151 INCOLOY 800H(1)(3)
A297HP35 A297 HP35 1.4857-GX40NiCrSi 35-25 - N08705 -
A297HP25Cr/35NiNb A297 HP35-MOD 1.4852-GX40NiCrNb 35-25 - - -
A297HP35MA A297 HP35-MOD GX40NiCrNbTi 35-25 - - -
A297HT A297 HT - - N08002 AISI 330(1)
A297HU A297 HU 1.4865-GX40NiCrSi 38-18 - N08004 -
18Cr/38NiNb - 1.4849-GX40NiCrSiNb 38-18 - - INCOLOY DS(1)(3)
353MA (2) - 1.4854-X6NiCrSiNCe 35-25 - S35315 353MA(1)
LEGHE base Nickel e Cobalto
35Cr/45NiMA - GX40NiCrNbSiTi
45-35
- - -
28Cr/48Ni/5W - 2.4879-GNiCr28W - - -
CY40 A494 CY40 - - N06040 INCONEL 600(1)(3)
17Cr/53NiW - - - - -
A297HW A297 HW - Z 30NC 60-15-M N08001 -
A297HX A297 HX - - N06006 -
UMCO50 - 2.4778-GCoCr28 - - -
UMCO51 - 2.4779-GCoCr28Nb - - -
50Cr/50NiNb - 2.4813-GNiCr50Nb - - IN657(3)

Composizione chimica

C% Si% Cr% Ni% Altri Microstruttura(5)
LEGHE Fe-Cr
1.4710 0.28 1.8 7.0 - - f, p
1.4729 0.38 1.8 13.0 - - f, c
1.4740 0.38 1.8 17.0 - - f, c
LEGHE Fe-Cr-Ni
A297HC 0.38 1.8 28.5 4.0 - f, a, c
A297HD 0.42 1.75 26.5 4.5 - f, a, c
A297HF 0.30 <2.0 20.5 10.0 - a, c
1.4826 0.40 1.75 22.0 10.0 - a, c
A297HH 0.40 1.75 25.0 12.5 - a, c
A297HI 0.40 1.0 25.0 21.5 - a, c
253MA(2) <0.20 1.70 21.0 11.0 Ce a, c
A297HK40 0.40 1.75 25.0 20.0 - a, c
AISI 310S <0.08 <1.5 25.0 20.5 - a, c
A297HL 0.40 <2.0 30.0 20.0 - a, c
24Cr/24NiNb 0.33 1.25 24.0 24.0 1.5 Nb a, c
LEGHE Fe-Ni-Cr
A297HN 0.35 2.0 21.0 25.0 2.0 Mn a, c
A351CT15C 0.10 1.0 20.0 32.0 1.0 Nb a, (c)
A297HP35 0.40 1.75 25.0 34.0 - a, c
A297HP25Cr/35NiNb 0.40 1.75 25.0 34.0 1.3 Nb a, c
A297HP35MA 0.40 2.5 25.0 30.0 1.2 Nb+Ti a, c
A297HT 0.55 <2.5 17.0 35.0 - a, c
A297HU 0.40 1.75 18.0 37.5 - a, c
18Cr/38NiNb 0.40 1.75 18.0 37.5 1.5 Nb a, c
353MA (2) <0.20 1.5 25.0 35.0 Ce a, c
LEGHE base Nickel e Cobalto
35Cr/45NiMA 0.40 <2.25 35.0 45.0 1.0 Ni+Ti a, c
28Cr/48Ni/5W 0.42 1.25 28.5 48.5 4.75W a, c
CY40 - - - - - a, c
17Cr/53NiW <0.50 1.50 17.0 53.0 1.5W-1.0N a, c
A297HW 0.55 <2.50 12.0 60.0 <2.0 Mn a, c
A297HX 0.55 <2.50 17.0 66.0 <2.0 Mn a, c
UMCO50 0.09 1.0 28 - 49.5 Co a, c
UMCO51 0.03 1.0 28.5 - 50.0 Co a, c
50Cr/50NiNb <0.1 0.4 50.0 BAL 1.5 Nb a

Proprietà meccaniche e fisiche
  Limite elastico 0.2% MPa min Rottura MPa min Allungamento %min Densità Ritiro lineare Temp. massima di lavoro in aria °C
LEGHE Fe-Cr
1.4710 - - - - 2.0 750
1.4729 - - - - 2.0 850
1.4740 - - - - 2.0 900
LEGHE Fe-Cr-Ni
A297HC - - - 7.5 1.5 1000
A297HD 240 515 8 7.58 2.0 1050
A297HF 240 485 25 7.75 2.4 870
1.4826 230 440 8 7.8 2.4 950
A297HH 240 515 10 7.72 2.4 1000
A297HI 240 485 10 7.72 2.4 1020
253MA(2) 260 530 20 7.75 2.4 1150
A297HK40 250 480 10 7.75 2.3 1050
AISI 310S 210 500 35 7.85 2.3 1025
A297HL 240 450 10 7.72 2.3 1100
24Cr/24NiNb 220 450 8 7.90 2.3 1070
LEGHE Fe-Ni-Cr
A297HN 234 435 8 7.83 2.4 1050
A351CT15C 175 440 20 8.0 2.3 1050
A297HP35 220 440 8 8.0 2.3 1100
A297HP25Cr/35NiNb 235 435 5 8.0 2.3 1120
A297HP35MA 235 435 5 8.0 2.3 1150
A297HT 220 450 4 7.92 2.3 1020
A297HU 206 450 4 8.04 2.3 1050
18Cr/38NiNb 235 450 8 8.04 2.3 1050
353MA (2) 260 500 15 7.90 2.3 1150
LEGHE base Nickel e Cobalto
35Cr/45NiMA 220 440 8 8.10 2.3 1150
28Cr/48Ni/5W 220 400 3 8.30 2.2 1150
CY40 195 485 30 8.35 2.2 1100
17Cr/53NiW 250 450 5 8.20 2.2 1120
A297HW 275 415 5 8.14 2.2 1100
A297HX 255 415 10 8.14 2.2 1100
UMCO50 - 500 6 8.05 2.3 1150
UMCO51 - 540 3 7.96 2.3 1150
50Cr/50NiNb 270 540 8 7.95 2.2 1100

Resistenza alte temperature

Limite a creep 1% 10.000 ore MPa a °C (4) Resistenza a creep per 100.000 ore MPa a °C (4)
  600 700 800 900 1000 1100 600 700 800 900 1000 1100
LEGHE Fe-Cr
1.4710 19.5 8 2.5 - - - - - - - - -
1.4729 22 9 3.5 1 - - - - - - - -
1.4740 22 9 3.5 1 - - - - - - - -
LEGHE Fe-Cr-Ni
A297HC 26 11 5 1.5 - - - - - - - -
A297HD - 21.5 10 4 1.0 - - - - - - -
A297HF - 40 19 9 2.0 - 40 25 12 5.0 - -
1.4826 82 46 23 10 - - 47 26 12 5 - -
A297HH - 44 22 11 4.5 - 45 30 15 6.0 2.8 -
A297HI - 42 24 11 4 1.5 - 34 22 10 4.0 -
253MA(2) - 55 28 16 7 1.5 - 50 26 14 6.0 -
A297HK40 - 57 35 18 8 2.5 - 45 32 17 6.5 -
AISI 310S - 53 32 16 7 2.0 - 42 29 15 5.5 -
A297HL - 58 36 19 9 2.5 - 46 32 17 6.5 -
24Cr/24NiNb - 70 42 22 9 - - 65 38 19 7.0 -
LEGHE Fe-Ni-Cr
A297HN - 45 28 17 6.5 - - 42 28 16 6.0 -
A351CT15C 75 68 42 22 8 - - 65 40 21 8.5 -
A297HP35 - 60 40 25 12 2 - 60 38 22 12 2.5
A297HP25Cr/35NiNb - 62 43 27 14 2.5 - 65 42 26 12.5 3.5
A297HP35MA - 64 45 29 15 3.0 - 70 50 28 14 4.0
A297HT - 50 32 20 5.5 - - 48 30 18 5.0 -
A297HU - 52 34 20 6 - - 50 32 19 6.0 -
18Cr/38NiNb - 55 36 21 6 - - 53 33 20 6.5 -
353MA (2) - 62 43 28 14 2.5 - 65 44 26 12.0 3.0
LEGHE base Nickel e Cobalto
35Cr/45NiMA - 72 53 27 16 6.0 - 65 47 26 14 5.0
28Cr/48Ni/5W - 70 55 24 11 4.5 - 73 50 24 11 4.0
CY40 - 60 41 21 7.0 2.0 - 48 28 15 7.0 2.0
17Cr/53NiW - 70 34 18 7.5 2.5 - 45 29 16 7.5 2.0
A297HW - 50 25 13 6 - - 30 20 13 6.0 -
A297HX - 50 26 14 6.5 - - 32 22 12 6.5 -
UMCO50 - 60 35 21 8 3.5 - 55 28 19 4.0 -
UMCO51 - 70 42 21 10 4.5 - 65 35 14 5.0 -
50Cr/50NiNb - 62 35 20 9.0 3.0 - 58 34 19 8 2.5

(1) Corrispettivo laminato.
(2) Leghe prodotte su licenza di Outokumpu AB.
(3) Leghe sotto marchio registrato Special Metals Inc.
(4) Dati di riferimento per fusioni centrifugate: per applicazioni in fusioni statiche applicare un fattore di riduzione del 10 - 15%.
(5) f: Ferrite delta; p: Perlite; a: Austenite; c: Carburi; (): Fase secondaria.