Materials & Grades

Steel Specifications for Castings

Chemical Composition limits for the cast analysis of corrosion resisting, heat resisting and high alloy steel castings.

Steel
C % (m/m)
Si % (m/m)
Mn % (m/m)
P % (m/m)
S % (m/m)
Cr % (m/m)
Mo % (m/m)
Ni % (m/m)
Cu % (m/m)
Nb % (m/m)
Sn % (m/m)
V % (m/m)
N₂ % (m/m)
410C21
0.15
1
1
0.04
0.04
11.5 to 13.5
1
0.3
420C28
0.2
1
1
0.04
0.04
11.5 to 13.5
1
0.3
420C29
0.2
1
1
0.04
0.04
11.5 to 13.5
1
0.3
425C12
0.06
1
1
0.04
0.04
11.5 to 14.0
0.40 to 1.0
3.5 to 4.5
425C11
0.1
1
1
0.04
0.04
11.5 to 13.5
0.6
3.4 to 4.2
302C25
0.12
1.5
2
0.04
0.04
17.0 to 21.0
8.0 min
304C12
0.03
1.5
2
0.04
0.04
17.0 to 21.0
8.0 to 12.0
304C12LT196
0.03
1.5
2
0.04
0.04
17.0 to 21.0
8.0 to 12.0
304C15
0.08
1.5
2
0.04
0.04
18.0 to 21.0
8.0 to 11.0
304C15LT196
0.08
1.5
2
0.04
0.04
18.0 to 21.0
8.0 to 11.0
347C17
0.08
1.5
2
0.04
0.04
18.0 to 21.0
9.0 to 12.0
8 x to 1.0
316C12
0.03
1.5
2
0.04
0.04
17.0 to 21.0
2.0 to 3.0
9.0 min
316C12LT196
0.03
1.5
2
0.04
0.04
17.0 to 21.0
2.0 to 3.0
9.0 min
316C16
0.08
1.5
2
0.04
0.04
17.0 to 21.0
2.0 to 3.0
9.0 min
316C16LT196
0.08
1.5
2
0.04
0.04
17.0 to 21.0
2.0 to 3.0
9.0 min
317C16
0.08
1.5
2
0.04
0.04
17.0 to 21.0
3.0 to 4.0
9.0 min
318C17
0.08
1.5
2
0.04
0.04
17.0 to 21.0
2.0 to 3.0
9.0 min
8 x to 1.0
332C11
0.07
1.5
1.5
0.04
0.04
19.0 to 22.0
2.0 to 3.0
27.5 to 30.5
3.0 to 4.0
332C13
0.04
1
1
0.04
0.04
24.5 to 26.5
1.75 to 2.25
4.75 to 6.0
2.75 to 3.25
332C15
0.08
1.5
1.5
0.04
0.04
21.0 to 27.0
1.75 to 3.0
4.0 to 7.0
0.10 to 0.25
For use with High Tempertatures
420C24
0.25
2
2
0.05
0.05
12.0 to 16.0
452C11
1
2
2
0.05
0.05
25.0 to 30.0
1.5
4
4
452C12
1.0 to 2.0
2
1
0.05
0.05
25.0 to 30.0
1.5
6.0 to 10.0
302C35
0.2 to 0.4
2
2
0.05
0.05
17.0 to 22.0
1.5
10.0 to 14.0
309C30
0.5
2.5
2
0.05
0.05
22.0 to 27.0
1.5
8.0 to 14.0
309C40
0.5
2
2
0.05
0.05
25.0 to 30.0
1.5
8.0 to 12.0
310C45
0.5
3
2
0.05
0.05
22.0 to 27.0
1.5
17.0 to 22.0
311C11
0.5
3
2
0.05
0.05
17.0 to 23.0
1.5
23.0 to 28.0
330C12
0.75
3
2
0.05
0.05
13.0 to 20.0
1.5
30.0 to 40.0
331C60
0.75
3
2
0.05
0.05
15.0 to 25.0
1.5
36.0 to 46.0
334C11
0.75
3
2
0.05
0.05
10.0 to 20.0
1.5
55.0 to 65.0
309C32
0.20 to 0.45
1.5
2.5
0.05
0.04
24.0 to 28.0
1.5
11.0 to 14.0
0.2
309C35
0.20 to 0.50
1.5
2
0.04
0.04
24.0 to 28.0
1.5
11.0 to 14.0
310C40
0.30 to 0.50
1.5
2
0.04
0.04
24.0 to 27.0
1.5
19.0 to 22.0
330C11
0.35 to 0.55
1.5
2
0.04
0.04
13.0 to 17.0
1.5
33.0 to 37.0
331C40
0.35 to 0.55
1.5
2
0.04
0.04
17.0 to 21.0
1.5
37.0 to 41.0

Mechanical properties and heat treatment processes for corrosion-testing and heat resisting and high all steel castings.

Steel
Lower yield stress ReL or 0.2% proof stress Rp0.2 min. N/mm₂
Tensile Strength Rm min. N/mm₂
Elongation A % min. (Lo = 5.65√So) %
Charpy V-Notch
Angle of Bend º
Radius of Bend mm
Brinell Hardness HB
Final Heat Treatment1
Energy - J
Temp - ⁰C
316C16LT196
240
480
26
41
-196
-
-
-
ST (1050 ºC to 1150ºC )
317C16
240
480
22
-
-
-
-
-
318C17
240
480
18
-
-
-
-
-
332C11
170
425
34
-
-
-
-
-
ST (1120ºC min. )
332C13
485
690
15
25
20
-
-
-
ST (1050ºC min. )
332C15
430
640
30
25
20
-
-
-
ST (1110ºC min. )
309C322
-
560
3
-
-
-
-
As cast
309C35
-
510
7
-
-
-
-
-
As cast
310C40
-
450
7
-
-
-
-
-
As cast
330C11
-
450
3
-
-
-
As cast
331C40
-
450
3
-
-
-
As cast

 

1. Heat treatment designations are as follows:

OQ - for quench into oil from a temperature above AC3.
AH - for air harden by heating to a temperature above AC3 and cool in air at a rate fast enough to produce a hardened microstructure.
T - for temper by heating to a temperature below AC1
ST - for solution treat by heating to a temperature high enough to dissolve carbides and intermetallic phases follows by a rapid cool.

2. For steel 309C32, test pieces are heat treated for 24 h at ºC ± 15ºC and cooled in air.

Mechanical properties and heat treatment processes for corrosion-resisting and heat resisting and high alloy steel castings

Steel
Lower yield stress ReL or 0.2% proof stress Rp0.2 min. N/mm₂
Tensile Strength Rm min. N/mm₂
Elongation A % min. (Lo = 5.65√So) %
Charpy V-Notch
Angle of Bend º
Radius of Bend mm
Brinell Hardness HB
Final Heat Treatment1
Energy - J
Temp - ⁰C
410C21
370
540
15
-
-
-
-
-
AH + T or OQ + T (Tat 750ºC max.)
420C28
45
620
13
-
-
-
-
-
420C29
465
690
11
-
-
-
-
-
425C12
550
755
15
-
-
-
-
-
AH or OQ (from 950ºC to 1050ºC) and T (590ºC to 650ºC) or AH or OQ (from 950ºC to 1050ºC), T (660ºC to 700ºC) and cool in air to below 95ºC and T (590ºC to 620ºC)
425C11
620
770
12
30
20
-
-
-
AH ot OQ (from 950ºC to 1050ºC) and T (590ºC to 650ºC)
1% proof stress Rp 1.0min
302C25
240
480
26
-
-
-
-
-
ST (1000ºC to 1100ºC)
304C12
215
430
26
-
-
-
-
-
304C15
215
480
26
-
-
-
-
-
347C17
215
480
22
-
-
-
-
-
301C12LT196
215
430
26
41
-196
-
-
-
301C15LT196
215
430
26
41
-196
-
-
-
316C12
215
430
26
-
-
-
-
-
ST (1050ºC to 1150ºC)
316C12LT196
215
430
26
41
-196
-
-
-
316C16
240
480
26
-
-
-
-
-

 

Chemical composition limits1 for the cast analysis of carbon, carbon manganese and low alloy steel castings.

Steel
C %mm
SI %mm
Mn %mm
P %mm
S %mm
Cr %mm
Mo %mm
Ni %mm
Cu %mm
S %mm
S %mm
S %mm
Total residuals max. %mm
Carbon and carbon-manganese steels
A12
0.25
0.60
0.90
0.050
0.050
0.303
0.153
0.403
0.303
-
-
-
0.80
A22
0.35
0.60
1.0
0.050
0.050
-
-
-
-
-
-
-
-
A32
0.45
0.60
1.0
0.050
0.050
-
-
-
-
-
-
-
-
A4
0.18 to 0.25
0.60
1.2 to 1.6
0.050
0.050
-
-
-
-
-
-
-
-
A5
0.25 to 0.33
0.60
1.2 to 1.6
0.050
0.050
-
-
-
-
-
-
-
-
A6
0.25 to 0.33
0.60
1.2 to 1.6
0.050
0.050
-
-
-
-
-
-
-
-
For use at low temperatures
AL14
0.20
0.60
1.1
0.040
0.040
0.303
0.153
0.403
0.303
-
-
-
0.80
AL25
0.25
0.60
1.2
0.040
0.040
0.303
0.153
0.403
0.303
-
-
-
0.80
AL35
0.25
0.60
1.2
0.040
0.040
0.303
0.153
0.403
0.303
-
-
-
0.80
BL2
0.12
0.60
0.80
0.030
0.030
-
-
3.0 to 4.0
-
-
-
-
-
High megnetic permeability
AM1
0.15
0.60
0.50
0.050
0.050
0.303
0.153
0.403
0.303
-
-
-
0.80
AM2
0.25
0.60
0.50
0.050
0.050
0.303
0.153
0.403
0.303
-
-
-
0.80
For case hardening
AW1
0.10 to 0.18
0.60
0.60 to 1.0
0.050
0.050
0.303
0.153
0.403
0.303
-
-
-
0.80
Resistance to wear and for surface hardening
AW2
0.40 to 0.50
0.60
1.0
0.050
0.050
0.303
0.153
0.403
0.303
-
-
-
0.80
AW3
0.50 to 0.60
0.60
1.0
0.050
0.050
0.303
0.153
0.403
0.303
-
-
-
0.80

 

Chemical composition limits1 for the cast analysis of carbon, carbon manganese and low alloy steel castings.

Steel
C %mm
SI %mm
Mn %mm
P %mm
S %mm
Cr %mm
Mo %mm
Ni %mm
Cu %mm
S %mm
S %mm
S %mm
Total residuals max. %mm
For use at elevated temperatures
B1
0.20
0.20 to 0.60
0.40 to 1.0
0.040
0.040
0.303
0.45 to 0.65
0.403
0.303
-
-
-
0.80
B2
0.20
0.60
0.50 to 0.80
0.040
0.040
1.0 to 1.5
0.45 to 0.65
0.403
0.303
-
-
-
-
B3
0.18
0.60
0.40 to 0.70
0.040
0.040
2.0 to 2.75
0.90 to 1.20
0.403
0.303
-
-
-
-
B4
0.25
0.75
0.30 to 0.70
0.040
0.040
2.50 to 3.50
0.35 to 0.60
0.403
0.303
-
-
-
-
B5
0.20
0.75
0.40 to 0.70
0.040
0.040
4.0 to 6.0
0.45 to 0.65
0.403
0.303
-
-
-
-
B6
0.20
1.0
0.30 to 0.70
0.040
0.040
8.0 to 10.0
0.90 to 1.20
0.403
0.303
-
-
-
-
B7
0.10 to 0.15
0.45
0.40 to 0.70
0.030
0.030
0.30 to 0.50
0.40 to 0.60
0.303
0.303
-
0.0253
0.22 to 0.30
-
Higher tensile strengths
BT16
-
-
-
0.040
0.040
-
-
-
-
-
-
-
-
BT26
-
-
-
0.040
0.040
-
-
-
-
-
-
-
-
BT36
-
-
-
0.030
0.030
-
-
-
-
-
-
-
-
Higher tensile strengths
BW2
0.45 to 0.60
0.75
0.50 to 1.0
0.040
0.040
0.80 to 1.5
0.40
-
-
-
-
-
-
BW3
0.45 to 0.60
0.75
0.50 to 1.0
0.040
0.040
0.80 to 1.5
0.40
-
-
-
-
-
-
BW4
0.45 to 0.60
0.75
0.50 to 1.0
0.040
0.040
0.80 to 1.5
0.40
-
-
-
-
-
-
For resistance to wear involving impact
BW10
1.0 to 1.35
1.0
11.0 min.
0.050
0.050
-
-
-
-
-
-
-
-

 

1. Composition in percentage mass by mass maximum unless shown as a range or a minumum.

2. For each reduction of 0.01% C below the maximum specified an increase of 0.04% Mn above the maximum specified shall be permitted up to a maximum of 1.1% Mn

3. Residual elements.

4. Manganese/carbon ratio shall exceed 3:1.

5. For each reduction of 0.01% C below the maximum specified, an increase of 0.04% Mn above the maximum specified shall be permitted up to a maxmimum of 1.4 % Mn.

6. The composition range for these steels shall be such as to give adequete hardenability through the maximum section thickness of the casting.

Mechanical properties of carbon, carbon manganese and low alloy steel castings.

Steel
0.2% Proof Stress N/mm₂
Tensile Strength N/mm₂
Elongation %
Charpy V-Notch
Brinell Hardness HB
Energy - J
Temp - ⁰C
A1
230
430
22
27
20
A2
260
490
18
20
20
A3
295
540
14
18
20
A4
320
540 - 690
16
30
20
A5
370
620 - 770
13
25
20
A6
495
690 - 850
13
25
20
AL1
230
430
22
20
-40
AL2
275
485 - 655
22
20
-46
AL3
275
485 - 655
22
27
-46
AM1
185
340 - 430
22
-
AM2
215
400 - 490
22
-
AW1
-
460 min
12
25
20
AW2
325
620 min
12
-
AW3
370
690
8
-
B1
260
460
18
20
20
B2
280
480
17
30
20
B3
325
540
17
25
20
B4
370
620
13
25
20
B5
420
620
13
25
20
B6
420
620
13
-
B7
295
510
17
-
BL2
280
460
20
20
-60
BT1
495
690
11
35
20
201 to 279
BT2
585
850
8
25
20
248 to 327
BT3
695
1000
6
20
20
293 to 362
BW2
-
201 to 255
BW3
-
293 min
BW4
-
342 min.
BW10
-
-

 

 

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