ASTM A519-06(2012)

1.1 This specification covers several grades of carbon and alloy steel seamless mechanical tubing. The grades are listed in Tables 1-3. When welding is used for joining the weldable mechanical tube grades, the welding procedure shall be suitable for the grade, the condition of the components, and the intended service.

TABLE 1 Chemical Requirements of Low-Carbon Steels

Grade
Designation

Chemical Composition Limits, %

Carbon^A

Manganese^B

Phosphorus,^B
max

Sulfur,^B
max

MT 1010

0.05–0.15

0.30–0.60

0.040

0.050

MT 1015

0.10–0.20

0.30–0.60

0.040

0.050

MT X 1015

0.10–0.20

0.60–0.90

0.040

0.050

MT 1020

0.15–0.25

0.30–0.60

0.040

0.050

MT X 1020

0.15–0.25

0.70–1.00

0.040

0.050

^A Limits apply to heat and product analyses.

^B Limits apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table 5.

TABLE 2 Chemical Requirements of Other Carbon Steels

Grade
Designation

Chemical Composition Limits, %^A

Carbon

Manganese

Phosphorus,
max

Sulfur,
max

1008

0.10 max

0.30–0.50

0.040

0.050

1010

0.08–0.13

0.30–0.60

0.040

0.050

1012

0.10–0.15

0.30–0.60

0.040

0.050

1015

0.13–0.18

0.30–0.60

0.040

0.050

1016

0.13–0.18

0.60–0.90

0.040

0.050

1017

0.15–0.20

0.30–0.60

0.040

0.050

1018

0.15–0.20

0.60–0.90

0.040

0.050

1019

0.15–0.20

0.70–1.00

0.040

0.050

1020

0.18–0.23

0.30–0.60

0.040

0.050

1021

0.18–0.23

0.60–0.90

0.040

0.050

1022

0.18–0.23

0.70–1.00

0.040

0.050

1025

0.22–0.28

0.30–0.60

0.040

0.050

1026

0.22–0.28

0.60–0.90

0.040

0.050

1030

0.28–0.34

0.60–0.90

0.040

0.050

1035

0.32–0.38

0.60–0.90

0.040

0.050

1040

0.37–0.44

0.60–0.90

0.040

0.050

1045

0.43–0.50

0.60–0.90

0.040

0.050

1050

0.48–0.55

0.60–0.90

0.040

0.050

1518

0.15–0.21

1.10–1.40

0.040

0.050

1524

0.19–0.25

1.35–1.65

0.040

0.050

1541

0.36–0.44

1.35–1.65

0.040

0.050

^A The ranges and limits given in this table apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table Number 5.