ASTM A519 Gr.4130 and Gr.4140 seamless mechanical tubing 2" to 12"

SEAMLESS MECHANICAL STEEL TUBING

Seamless mechanical tubing is manufactured from carbon and alloy steels for structural or other mechanical purposes involving machining or heat treating, where close tolerances, smooth finish, or definite physical properties are important factors.

ASTM A519 / A519M, ASME SA519 / SA519M is the standard applicable to seamless carbon and alloy steel mechanical tubes.

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 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: ASTM A519 GR.4130 Mechanical tubing; A519 Gr.4140 Mechanical tubing; Grade 4140 ASTM A519 carbon steel tube; ASTM A519 4130 SEAMLESS TUBING; ASTM A519 4140 SEAMLESS TUBING; ASTM A519 GR. 4130 mechanical pipes; ASTM A 519 GR.4140 carbon steel pipe; Grade 4130 SEAMLESS PIPE; ASTM A519 Grade 4140 cold drew seamless steel tubes; ASTM A519 Gr.4130 pipes and tubing; ASTM A519 SAE4140 seamless tubing; alloy steel tube; carbon steel tube; mechanical tubing; Seamless steel tube; steel tube.

Size: 6mm-323.8mm

Schedule: 10-XXS

Shape: Round or Special sections.

Length: Single random length/ Double random length or as customer actual request

Grade: SAE 4130 / AISI 4130 / GRADE 4130 / GRADE 4140 / SAE 4140

Condition: The purchaser shall specify a sizing method and if required, a thermal treatment.

• Sizing Methods:

HF-Hot Finished,

CW-Cold worked,

RT-Rough Turned,

G– Ground.

• Thermal Treatments:

A-Annealed,

N– Normalized,

QT-Quenched and Tempered,

SR-Stress Relieved or Finished Anneal.

ASTM A519 Gr.4130 and Gr.4140 seamless tubing Chemical Composition (%):

Grade	C	Mn	P	S	Si	Cr	Mo
4130	0.28-0.33	0.4-0.6	0.04 max	0.04 max	0.15-0.35	0.80-1.10	0.15-0.25
4140	0.38-0.43	0.75-1.00	0.04 max	0.04 max	0.15-0.35	0.80-1.10	0.15-0.25

ASTM A519 GR.4130 and Gr.4140 Seamless tubing Mechanical Properties:

Grade Designation	Conditional	Ultimate strength		yield strength		Elongation in 2in. Or 50mm, %	Rockwell, Hardness B scale
		ksi	Mpa	ksi	Mpa
4130	HR	90	621	70	483	20	89
	SR	105	724	85	586	10	95
	A	75	517	55	379	30	81
	N	90	621	60	414	20	89
4140	HR	120	855	90	621	15	100
	SR	120	855	100	689	10	100
	A	80	552	60	414	25	85
	N	120	855	90	621	20	100

 

A519 Gr.4130 a Gr.4140 Mechanical tubing Outside Diameter Tolerances for round Hot-Finished Tubing:

Outside Diameter Tolerances for Round Hot-Finished Tubing A, B, C
Outside Diameter Size Range,	Outside Diameter Tolerance, in. (mm)
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)

ASTM A519 Seamless tubing Mechanical Test Requirements:

• Hardness Test
• Tension Tests
• Nondestructive tests
• Steel Cleanliness
• Hardenability
• Flaring Test

SAE4130 and SAE4140 Seamless tubes Packing and Marking

• Packed in bundles, wrapped in plastic, and suitably protected for sea-worthy delivery or as requested.
• Marking should be standard, graded, size, heat no. Lot no etc.