Steel Specification 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 Energy – J
|
Charpy V-Notch Temp – ⁰C
|
Angle of Bend º
|
Radius of Bend mm
|
Brinell Hardness HB
|
Final Heat Treatment1
|
---|---|---|---|---|---|---|---|---|---|
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 Energy – J
|
Charpy V-Notch Temp – ⁰C
|
Angle of Bend º
|
Radius of Bend mm
|
Brinell Hardness HB
|
Final Heat Treatment1
|
---|---|---|---|---|---|---|---|---|---|
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
|
–
|
–
|
–
|
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
|
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 Energy – J
|
Charpy V-Notch Temp – ⁰C
|
Brinell Hardness HB
|
---|---|---|---|---|---|---|
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 |
₋
|
₋
|
₋
|
₋
|
–
|
–
|