ASTM A519 / API -5CT

9CR

General purpose pipe manufactured to ASTM Specification 519

Similar to 4140 (which has a lower carbon level), 9CR has improved hardenability and is more commonly used in the higher strength >= 110ksi condition.

Available in bar dimensions of 50.8 mm (2") to 762 mm (30")

Length range up to 9.14 m (30') 

  • Select Yield :
  • 80

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.090 0.300 0.900 8.000 - - - - - - - -
Max 0.150 0.600 1.100 10.000 0.250 0.250 - 0.020 0.010 1.000 - 0.040

Mechanical Properties

Tensile Strength 689 MPa min 100,000 psi min
Yield Strength 552 MPa min 655 MPa max
  80,000 psi min 95,000 psi max
Total Elongation Under Load 20.000 % -
Hardness 22 Max HRC -

4140

General purpose pipe manufactured to ASTM Specification 519

Available in mechanical tube dimensions of 69.85 mm (2.75") od to 508 mm (20") od / 8.53 mm (0.34") wall to 82.55 mm (3.25") wall

Length range up to 10.67 m (35')

Available in bar dimensions of 38.1 mm (1.5") to 762 mm (30")

Length range up to 9.14 m (30')

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.380 0.750 0.150 0.800 - - - - - - - -
Max 0.430 1.000 0.250 1.100 - - - 0.040 0.040 0.350 - -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.380 0.750 0.150 0.800 - - - - - - - -
Max 0.430 1.000 0.250 1.100 0.250 0.250 - 0.025 0.025 0.350 0.300 0.040

Mechanical Properties

Tensile Strength 689 MPa min 100,000 psi min
Yield Strength 552 MPa min 655 MPa max
  80,000 psi min 95,000 psi max
Total Elongation Under Load 20.000 % -
Hardness 22 Max HRC -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.380 0.750 0.150 0.800 - - - - - - - -
Max 0.430 1.000 0.250 1.100 0.250 0.250 - 0.025 0.025 0.350 0.300 0.040

Mechanical Properties

Tensile Strength 862 MPa min 125,000 psi min
Yield Strength 758 MPa min 965 MPa max
  110,000 psi min 140,000 psi max
Total Elongation Under Load 13.000 % -
Hardness 36 Max HRC -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.380 0.750 0.150 0.800 - - - - - - - -
Max 0.430 1.000 0.250 1.100 0.250 0.250 - 0.025 0.025 0.350 0.300 0.040

Mechanical Properties

Tensile Strength 862 MPa min 125,000 psi min
Yield Strength 862 MPa min 965 MPa max
  125,000 psi min 140,000 psi max
Total Elongation Under Load 13.000 % -
Hardness - 341 Max HBW

4130M

General purpose pipe manufactured to ASTM Specification 519

Available in mechanical tube dimensions of 134.37 mm (5.29") od to 457.2 mm (18") od / 18.11 mm (0.71") wall to 55.25 mm (2.18") wall

Length range up to 10.67 (35')

Available in bar dimensions of 50.8 mm (2") to 762 mm (30")

Length range up to 9.14 m (30')

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.250 0.600 0.650 1.200 - - - - - - - -
Max 0.330 0.900 0.750 1.500 0.250 0.250 - 0.015 0.010 0.350 - -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.250 0.600 0.650 1.200 - - - - - - - -
Max 0.330 0.900 0.750 1.500 0.250 0.250 - 0.015 0.010 0.350 - -

Mechanical Properties

Tensile Strength 689 MPa min 100,000 psi min
Yield Strength 552 MPa min 655 MPa max
  80,000 psi min 95,000 psi max
Total Elongation Under Load - -
Hardness - -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.250 0.600 0.650 1.200 - - - - - - - -
Max 0.330 0.900 0.750 1.500 0.250 0.250 - 0.015 0.010 0.350 - -

Mechanical Properties

Tensile Strength 862 MPa min 125,000 psi min
Yield Strength 758 MPa min 965 MPa max
  110,000 psi min 140,000 psi max
Total Elongation Under Load - -
Hardness - -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.250 0.600 0.650 1.200 - - - - - - - -
Max 0.330 0.900 0.750 1.500 0.250 0.250 - 0.015 0.010 0.350 - -

Mechanical Properties

Tensile Strength 862 MPa min 125,000 psi min
Yield Strength 862 MPa min 965 MPa max
  125,000 psi min 140,000 psi max
Total Elongation Under Load 14.000 % -
Hardness 39 Max HRC -

4130

General purpose pipe manufactured to ASTM Specification 519

Available in mechanical tube dimensions of 134.37 mm (5.29") od to 457.2 mm (18") od / 18.11 mm (0.71") wall to 55.25 mm (2.18") wall

Length range up to 10.67 m (35')

4130 has improved weldability compared to 4140 (which has a higher carbon level) though this is achieved at the expense of through thickness strength.

Available in bar dimensions of 50.8 mm (2") to 762 mm (30")

Length range up to 9.14 m (30')

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.280 0.400 0.150 0.800 - - - - - - - -
Max 0.330 0.600 0.250 1.100 - - - 0.040 0.040 0.350 - -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.280 0.400 0.150 0.800 - - - - - - - -
Max 0.330 0.600 0.250 1.100 - - - 0.040 0.040 0.350 - -

Mechanical Properties

Tensile Strength 689 MPa min 100,000 psi min
Yield Strength 552 MPa min 655 MPa max
  80,000 psi min 95,000 psi max
Total Elongation Under Load 20.000 % -
Hardness 23 Max HRC -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.280 0.400 0.150 0.800 - - - - - - - -
Max 0.330 0.600 0.250 1.100 - - - 0.040 0.040 0.350 - -

Mechanical Properties

Tensile Strength 862 MPa min 125,000 psi min
Yield Strength 758 MPa min 965 MPa max
  110,000 psi min 140,000 psi max
Total Elongation Under Load 13.000 % -
Hardness 30 Max HRC -

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.280 0.400 0.150 0.800 - - - - - - - -
Max 0.330 0.600 0.250 1.100 - - - 0.040 0.040 0.350 - -

Mechanical Properties

Tensile Strength 862 MPa min 125,000 psi min
Yield Strength 862 MPa min 965 MPa max
  125,000 psi min 140,000 psi max
Total Elongation Under Load 13.000 % -
Hardness - -

K55

Available in mechanical tube dimensions of 101.6 mm (4") od to 533.4 mm (21") od / 7.52 mm (0.3") wall to 32.13 mm (1.27") wall

Length range up to 7.62 m (25')

General purpose pipe manufactured to API specification 5CT. Similar to J55 but the minimum tensile strength is higher

Available in casing dimensions of 114.3 mm (4.5") to 508 mm (20")

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min - - - - - - - - - - - -
Max - - - - - - - 0.030 0.030 - - -

Mechanical Properties

Tensile Strength 655 MPa min 95,000 psi min
Yield Strength 379 MPa min 552 MPa max
  55,000 psi min 80,000 psi max
Total Elongation Under Load 0.500 % -
Hardness - -

8630Mod

General-purpose pipe manufactured to ASTM  Specification 519

Widely used in oil-patch applications such as connectors, hangers and block valves. Higher strength levels can be achieved by suitable heat treatment, but these are not NACE MR0175 approved.

Available in bar dimensions of 50.8 mm (2") to 762 mm (30")

Length range up to 6.1 m (20')

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.280 0.700 0.350 0.400 - - - - - - - -
Max 0.330 0.950 0.450 0.600 0.900 - - 0.035 0.040 0.350 - -

Mechanical Properties

Tensile Strength 655 MPa min 95,000 psi min
Yield Strength 517 MPa min 75,000 MPa max
  - -
Total Elongation Under Load 17.000 % -
Hardness 22 Max HRC -

1026

General purpose pipe manufactured to ASTM Specification 519

Available in mechanical tube dimensions of 50.8 mm (2") od to 457.2 mm (18") od / 4.78 mm (0.19") wall to 101.6 mm (4") wall

Length range up to 6.1 m (20')

Available in bar dimensions of 76.2 mm (3") to 762 mm (30")

Length range up to 6.1 m (20')

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.220 0.600 - - - - - - - - - -
Max 0.280 0.900 - - - - - 0.040 0.050 - - -