Like us!
Follow us!
Follow us
Chat With us
Mail us

Carbon Steel

Carbon steel is a special type of steel that, as the name suggests, has a higher concentration of carbon than other types of steel. Most types of steel have a relatively low carbon content of about 0.05% to 0.3%. In comparison, carbon steel has a carbon content of up to 2.5%. Two-and-a-half percent carbon may sound insignificant, but it introduces several attractive benefits that aren’t found elsewhere.

Carbon Steel Products

Pipe Fittings

Seamless, Welded

Pipe Fittings

Seamless, Welded

Elbow, Tee, Cross, Reducer, Bend, Stub End

Forged Fittings

Socket weld, Threaded

Forged Fittings

Socket weld, Threaded

Elbow, Tee, Cross, Coupling, Olets, Union, Bushing

Flanges

Forged, Plate

Flanges

Forged, Plate

SORF, WNRF, BLRF, SWRF

Technical Properties of Carbon Steel

ASTM A234

Specification for Piping Fittings of Wrought Carbon Steel for Moderate and High Temperature Service

Gr. C Mn P
max		 S
max		 Si
WPB
(1 2 3 4 5)		 0.3
max		 0.29
1.06		 0.050 0.058 0.1
min
WPC
(2 3 4 5)		 0.35
max		 0.29
1.06		 0.050 0.058 0.1
min
Composition, %
Gr. Cr Mo Ni Cu Others
WPB
(1 2 3 4 5)		 0.4
max		 0.15
max		 0.4
max		 0.4
max		 V 0.08
max
WPC
(2 3 4 5)		 0.4
max		 0.15
max		 0.4
max		 0.4
max		 V 0.08
max

ASTM A105

Specification for Carbon Steel Forgings for Piping Applications

Composition, %
Elt C Mn P S Si
  0.35
max		 0.6
1.05		 0.035
max		 0.04
max		 0.1
0.35
Composition, %
Elt Cu Ni Cr Mo V
  0.4
max (1)		 0.4
max (1)		 0.3
max (1-2)		 0.12
max (1-2)		 0.08
max
Mechanical Properties Metric English Comments
Hardness, Brinell  163 - 600 163 - 600 Average value: 260 Grade Count:235
Hardness, Knoop  195 - 769 195 - 769 Average value: 297 Grade Count:177
Hardness, Rockwell B  43 - 100 43 - 100 Average value: 95.7 Grade Count:176
Hardness, Rockwell C  10 - 70 10 - 70 Average value: 46.4 Grade Count:284
Hardness, Vickers  182 - 748 182 - 748 Average value: 286 Grade Count:177
Tensile Strength, Ultimate  161 - 3200 MPa 23300 - 464000 psi Average value: 1120 MPa Grade Count:269
Tensile Strength, Yield  275 - 3340 MPa 39900 - 484000 psi Average value: 896 MPa Grade Count:253
Elongation at Break  0.50 - 30 % 0.50 - 30 % Average value: 14.3 % Grade Count:242
Reduction of Area  13.4 - 73 % 13.4 - 73 % Average value: 38.7 % Grade Count:107
Modulus of Elasticity  13.8 - 235 GPa 2000 - 34100 ksi Average value: 200 GPa Grade Count:338
Flexural Yield Strength  159 - 5130 MPa 23000 - 744000 psi Average value: 2260 MPa Grade Count:26
Compressive Yield Strength  1320 - 3100 MPa 191000 - 450000 psi Average value: 2160 MPa Grade Count:4
Bulk Modulus  160 GPa 23200 ksi Average value: 160 GPa Grade Count:188
Poissons Ratio  0.28 - 0.313 0.28 - 0.313 Average value: 0.292 Grade Count:262
Fracture Toughness  13.2 - 165 MPa-m½ 12.0 - 150 ksi-in½ Average value: 60.1 MPa-m½ Grade Count:5
Machinability  10 - 125 % 10 - 125 % Average value: 53.0 % Grade Count:152
Shear Modulus  78.0 - 82.7 GPa 11300 - 12000 ksi Average value: 79.9 GPa Grade Count:264
Izod Impact  3.00 - 18.0 J 2.21 - 13.3 ft-lb Average value: 8.90 J Grade Count:64
Izod Impact Unnotched  10.8 - 229 J 8.00 - 169 ft-lb Average value: 53.5 J Grade Count:31
Charpy Impact  1.36 - 99.0 J 1.00 - 73.0 ft-lb Average value: 34.1 J Grade Count:21
Charpy Impact, Unnotched  2.71 - 86.0 J 2.00 - 63.4 ft-lb Average value: 19.2 J Grade Count:13
AISI/SAE grade EN steel number EN steel name DIN BS UNI JIS
(USA) (Europe) (Europe) (Germany) (UK) (Italy) (Japan)
1010 1.1141 C15D CK15 040A15 C15 S12C
1018 1.0401 C18D C15 080M15 C16 S15
  1.0453   C16.8 080A15 1C15 S15CK
        EN3B   S15C
1045 1.0503 C45 C45 060A47 C45 S45C
1.1191 CK45 080A46 1C45 S48C
1.1193 CF45 080M46 C46  
1.1194 CQ45   C43  
1140/1146 1.0726 35S20 35S20 212M40    
1.0727 45S20 45S20 En8M
1215 1.0715 11SMn37 9SMn28 230M07 CF9SMn28 SUM 25
1.0736 9SMn36 En1A CF9SMn36 SUM 22
12L14 1.0718 11SMnPb30 9SMnPb28 230M07 Leaded CF9SMnPb29 SUM 22
1.0737 11SMnPb37 9SMnPb36 En1B Leaded CF9SMnPb36 SUM 23
          SUM 24
  1.1555 C120U C125W BW1C C120KU SK2
Hiton Fittings Pvt. Ltd.