SAE 1045 Carbon Steel Pipe / S45C Seamless Steel Pipe / SMLS Pipe
DN6-DN500 Steel Pipe
ASTM A519 GRADE 1045 including hot Finished Seamless Tubing and
cold finished tubing. The outer diameter tube sizes 10mm-323.8mm
and Nominal bore NB sizes 10NB-300NB.
ASTM A519 covers several grades of carbon and alloy steel seamless
mechanical tubing.
ASTM A519 covers both seamless hot-finished mechanical tubing and
seamless cold-finished mechanical tubing in sizes up to and
including 12 3⁄4 in. (323.8 mm) outside diameter for round tubes
with wall thicknesses as required.
Standard: ASTM A519 / ASME SA 519
Description Name: ASME SA519 / ASTM A519 GR.1045 boiler pipes, A519
pipes, Grade 1045 ASTM A519 carbon steel tube, ASTM A519 GR. 1045
mechanical pipes, ASTM A 519 GR.1045 carbon steel pipe, Grade 1045
SEAMLESS PIPE, ASTM A519 Grade 1045 cold drawn seamless steel
tubes, ASTM A519 Gr.1045 pipes and tubing, ASTM A519 SAE1045
seamless tubing, alloy steel tube, carbon steel tube, mechanical
tubing, Seamless steel tube, steel tube.
Size: 10mm-323.8mm
Schedule: 10-XXS / Thk
Shape: Round or Special sections.
Length: Single random length/ Double random length or as customer’s
actual request
Grade: SAE 1045 / GRADE 1045 / AISI 1045
Condition: The purchaser shall specify a sizing method and, if
required, a thermal treatment.
HF-Hot Finished,
CW-Cold worked,
RT-Rough Turned,
G– Ground.
A-Annealed,
N– Normalized,
QT-Quenched and Tempered,
SR-Stress Relieved or Finished Anneal.
ASTM A519 SAE1035 seamless tubing Chemical Composition (%):
| Grade | C | Mn | P≤ | S≤ |
| 1045 | 0.43-0.50 | 0.60-0.90 | 0.040 | 0.050 |
Outside Diameter Tolerances for Round Hot-Finished Tubing:
| Outside Diameter Tolerances for Round Hot-Finished Tubing A, B, C |
Outside Diameter Size Range,
In.(mm) | Outside Diameter Tolerance, in. (mm) |
| Over (+) | Under (-) |
| up to 2.999 (76.17) | 0.020 (0.51) | 0.020 (0.51) |
| 3.000-4.499 (76.20-114.27) | 0.025 (0.64) | 0.025 (0.64) |
| 4.500–5.999 (114.30–152.37) | 0.031 (0.79) | 0.031 (0.79) |
| 6.000–7.499 (152.40–190.47) | 0.037 (0.94) | 0.037 (0.94) |
| 7.500–8.999 (190.50–228.57) | 0.045 (1.14) | 0.045 (1.14) |
| 9.000–10.750 (228.60–273.05) | 0.050 (1.27) | 0.050 (1.27) |
A. Diameter tolerances are not applicable to normalized and
tempered or quenched and tempered conditions.
B. The common range of sizes of hot finished tubes is 11⁄2 in.
(38.1 mm) to 103⁄4 in. (273.0 mm) outside diameter with wall
thickness at least 3 % or more of outside diameter, but not less
than 0.095 in. (2.41 mm). C. Larger sizes are available, consult manufacturer for sizes and
tolerances. |
Wall Thickness Tolerances for round Hot-Finished Tubing:
| Wall Thickness Tolerances for Round Hot-Finished Tubing |
| Wall Thickness Range as Percent of Outside Diameter | Wall Thickness Tolerance, percent Over
A and Under Nominal |
| Outside Diameter 2.999 in. (76.19 mm) and smaller | Outside Diameter 3.000 in. (76.20 mm) to 5.999 in. (152.37 mm) | Outside Diameter 6.000 in. (152.40 mm) to 10.750 in. (273.05 mm) |
| Under 15 | 12.5 | 10 | 10 |
| 15 and over | 10 | 7.5 | 10 |
A Wall thickness tolerance may not be applicable to walls 0.199 in.
(5.05 mm).
and less, consult manufacturer for wall tolerances on such tube
sizes. |
Wall Thickness Tolerances for Cold Finished Tubing:
| Wall Thickness Tolerances for Cold Finished Tubing |
| Wall Thickness S/ Outside Diameter D (%) | Wall Thickness Tolerance (±%) |
| Inside Diameter D<38.1mm | Inside Diameter >=38.1 |
| <=25% | 10.0 | 7.5 |
| >25% | 12.5 | 10.0 |
