4100 Pipe and Tube Specifications

The 4100 series uses Chrome and Molybdenum to increase the strength and wear characteristics of carbon steel. American Piping Products has a long history with Chrome/Moly steels for the power industry, so the 4100 series is a natural addition to our current inventories. We specialize in seamless products and carry pipe sizes in 4130 as well as tubing sizes in 4130 and 4140.

CHEMISTRY

	4130	4140	4142
Carbon max. %	0.28 – 0.33	0.38 – 0.43	0.40 – 0.45
Manganese %	0.40 – 0.60	0.75 – 1.00	0.75 – 1.00
Phosphorous, max. %	0.04	0.04	0.04
Sulfur, max. %	0.04	0.04	0.04
Silicon, min.%	0.15 – 0.35	0.15 – 0.35	0.15 – 0.35
Chrome, max. %	0.80 – 1.10	0.80 – 1.10	0.80 – 1.10
Molybdenum, max. %	0.15 – 0.25	0.15 – 0.25	0.15 – 0.25

MECHANICAL PROPERTIES

The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.

Mechanicals	Heat Condition	Hardness	Yield	Tensile
A519-4130 / 4140	Quenched and Tempered	28-32 RC	Not Tested	Not Tested
API 5CT L80 in 4519-4100	Quenched and Tempered	18-22 RC	80 – 95 ksi	95 ksi min
API 5CT P110 in 4519-4100	Quenched and Tempered	30-36 RC	110 – 140 ksi	125 ksi min
API 5CT Q125 in 4519-4100	Quenched and Tempered	32-36 RC	125 – 150 ksi	135 ksi min

CHARPY V NOTCH TESTING

Charpy V Notch Testing (CVN) is not required, but much of American Piping Products’ inventory is tested at the mill.

HEAT CONDITIONS FOR 4100 ALLOYS

Condition	Grade	Medium
Annealed	A519-4130 CD	Air
Annealed or Normalized	A519-4130 /A519-4140	Air
Quenched and Tempered	A519-4130	Water
Quenched and Tempered	A519-4140	Polymer or Oil
Quenched and Tempered	A519-4142	Oil