Tabella dei materiali

CAT. ACCIAI

Analisi chimica di colata %

Caratteristiche mecc.

Trattamento
termico

DESIGNAZIONE

UNI

AISI

C
%

Mn
%

Si
%

Cr
%

Ni
%

Mo
%

ALTRI
%

R
kg/mm2

Rs min
kg/mm2

A min
%

DUREZZA

CEMENTAZIONE

C 10

1010

0.07/0.12

0.30/0.70

1.0 max

(50/90)

(30)

(12)

Cementazione tempra e distensione

16NiCr 11

3415

0.12/0.18

0.30/0.60

0.75 max

0.60/0.90

2.50/3.00

(115/145)

(90)

(9)

c.s.

18NiCrMo5

0.15/0.21

0.60/0.90

1.0 max

0.70/1.00

1.20/1.50

0.15/0.25

(125/155)

(100)

(8)

c.s.

DA BONIFICA

C 30

1030

0.27/0.34

0.50/0.80

0.75 max

(65/80)

(45)

(17)

Bonifica

C 40

1040

0.37/0.44

0.50/0.90

0.75 max

(71/86)

(50)

(15)

c.s.

C 50

1050

0.47/0.55

0.60/0.90

0.90 max

(77/92)

(55)

(13)

c.s.

38NiCrMo4

9840

0.34/0.42

0.50/0.80

0.75 max

0.70/1.00

0.15/0.25

(110/115)

(85)

(12)

c.s.

30NiCrMo12

0.27/0.35

0.50/0.80

0.75 max

0.60/1.00

2.60/3.20

0.30/0.60

(100/115)

(85)

(14)

c.s.

40NiCrMo7

4340

0.38/0.46

0.60/1.00

0.50/1.50

0.65/1.00

1.65/2.00

0.30/0.45

140

126

HRC 44/49

c.s

30NiCrMo2

8630

0.25/0.35

0.60/0.95

1.00 max

0.35/0.65

0.35/0.75

0.15/0.30

CU=0.35 max

105 min

87 min

HRC 323/38

c.s.

PER MOLLE

55Si 8

9255

0.50/0.60

0.70/1.00

1.80/2.20

0.15/0.45

(140/170)

(125)

(5)

Tempra e rinvenimento

52SiCrNi5

0.49/0.56

0.70/0.90

1.20/1.50

0.70/1.00

0.50/0.70

(160/185)

(135)

(5)

c.s.

50 Cr V4

6150

0.47/0.55

0.70/0.90

1.00 max

0.80/1.20

V=0.10/0.20

(140/170)

(125)

(6)

c.s.

VARI * (per cuscinetti, per nuclei magnetici, per valvole)

100 Cr6

52100

0.95/1.10

0.25/0.45

0.85 max

1.40/1.60

HRC 62/64

Tempra e rinvenimento

FeSi 2.5

0.03 max

0.12

2.43

0.06 max

0.05 max

X45 CrNi
W 1909

BS EN 55

0.18/0.45

1.00 max

1.00/2.50

17.00 min

6.00/12.00

W=2.0/4.0

(80/95)

(38)

(30)

HB 270 max

Solubilizzazione

RAPIDI

X75 W18
KU

0.70/0.80

0.50 max

0.70 max

3.50/4.50

W=17.0/19.0
V=0.8/1.2

HRC 66 max

Tempra e rinvenimento

X82W Mo
0605 KU

0.75/0.90

0.50 max

0.70 max

3.50/4.50

4.50/5.50

W=5.50/7.00
V=1.60/2.20

HRC 66 max

c.s.

DA UTENSILI

88 Nn V8
KU

0.80/0.95

1.80/2.20

0.75 max

V=0.10/0.20

HRC 65 max

Tempra e rinvenimento

X210 G13
KU

D3 1.90/2.30

0.50 max

1.00 max

12.00/14.00

HRC 63/65

c.s.

58WCr9
KU S1

0.50/0.65

0.50 max

0.50/1.50

0.80/1.20

W 2.0/2.5

HRC 50/58

c.s

C 98 KU

0.90/1.05

<=0.40

0.35/0.50

V=0.10

HRC 66/68

s.c.

INOX AUSTENITICI

X10 CrNiS
1809

303

0.15 max

2.00 max

17.00/19.00

8.00/10.00

S=0.15 min

(55/75)

(24 min)

(35 min)

Solubilizzazione

X5CrNi
1810

304

0.08 max

2.00 max

18.00/20.00

8.00/10.500

(50/70)

(22)

(40 min)

c.s.

X2CrNi
1811

304 L

0.05 max

2.00 max

16.00/20.00

8.00/12.00

(50/70)

(22)

(40)

HRB 86 max

c.s.

X22CrNi
2522

310

0.18 max

2.00 max

24.00/26.00

19.00/22.00

0.5 max

Cu 0.5 max

(60/75)

(25)

(30)

c.s.

X5CrNiMo
1712

316

0.15 max

2.00 max

16.00/18.50

10.50/13.5

2.00/2.50

Cu 0.5 max

(55/75)

(20)

(40)

c.s.

INOX MARTENSITICI

X12Cr13

403

0.15 max

1.00 max

0.50 max

11.50/13.00

(70/90)

(60)

(15)

Tempra e rinvenimento

X12Cr13

410

0.05/0.15

1.00 max

11.50/13.50

0.50 max

Cu=0.5 max

66 min

52 min

8 min

HRB 90/10.5

Bonifica

X30Cr13

420

0.26/0.35

1.00 max

12.00/14.00

1.00 max

(80/100)

(60)

(12)

c.s.

x16CrNi16

431

0.08/0.15

1.00 max

15.00/17.00

1.50/2.20

119 min

91 min

HRC 38/49

c.s.

X12CrS13

416

0.15 max

1.25 max

1.50 max

11.5/14.00

S=0.15/0.35

63 min

45 min

8 min

HRB 90/105

c.s.

INOX FERRITICI

X8Cr17

430

0.12 max

1.00 max

14.00/18.00

(52/60)

(25/49)

(15 min)

HRB 80

ricottura

INOX INDURENTI PER PRECIPITAZIONE

17.4 PH

0.06 max

0.70 max

0.50/1.00

15.50/16.70

3.60/4.60

Cu=2.8/3.5
Cb+Ta=0.15/0.40

126 min

105 min

6 min

HRC 40 min

Solubilizzazione e invecchiamento

LEGHE DI COBALTO

Stellite 3

Leghe resistenti all’usura

2.45

1.00 max

31.00

3.0 max

W=12.5 Fe=3.0
Co=Rimanenza

HRC 51/54

Stellite 93
base ferro

2.50/3.50

1.50 max

15.00/19.00

14.00/18.00

V=1.0/1.3
Co=4.0/7.0

HRC 55 min

Stellite 21

Leghe resistenti al calore

0.20/0.30

1.00 max

25.00/29.00

1.75/3.75

5.00/6.00

Fe=3.00 max
B=0.07 max

36.5

HRC 34 max

Stellite 31

0.45/0.55

1.00 max

24.50/26.50

9.50/11.50

W=7.0/8.0
Fe=2.0 max

HRC 34 max