Honed Seamless Carbon Steel Tube&Pipe for Hydraulic Cylinder SAE1020, SAE1045, 4130, 4140, St52, E355

• Type: Seamless
• Technique: Cold Drawn
• Material: Alloy Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Model NO.: seamless steel pipe
• Products: 4140 Steel Pipes
• Types: Seamless Steel Pipe
• Test: 100% NDT
• Standard: A519 4140 Steel Tube
• Transport Package: Standard Sea Worthy
• Specification: OD 10.3-610mm
• Origin: China
• Production Capacity: 3000tons/Month

Product Description

Honed Seamless Carbon Steel Tube&Pipe for Hydraulic Cylinder SAE1020, SAE1045, 4130, 4140, St52, E355

Grade AISI 4140 is a low alloy steel that contains additions of chromium, molybdenum, and manganese in their alloy. In comparison to Grade 4130, the content of carbon in 4140 is slightly higher. This versatile alloy makes for an AISI 4140 Pipe with good properties. For instance, they have good resistance to atmospheric corrosion along with reasonable strength.

The chemistry of grade 4140 seamless pipe manifests good overall alliances of properties such as toughness, strength, fatigue strength and wear resistance as well. A heat treatment is carried out on the components for the purpose of improving its mechanical properties. Furthermore, this alloy has self-scaling properties, which is an important characteristic for 4140 alloy steel pipe. The resistance to scaling would effectively lower the cost of treatment. Considered to be a mechanical tube, the aisi 4140 steel pipe is produced by either cold finishing or by means of hot finishing, which is usually cast in ingots or if required, strand cast. Once the pipe has been hot worked, it could be cold finished, and finally, they are coated with oil prior to being formed. Oiling the surface of ASTM A519 Grade 4140 Pipe efficiently retards the collection of dust.

1.AISI 4140 steel equivalent

GB,YB	JIS	DIN(W-Nr.)	ASTM	BS	NF
42CrMo	SCM440/(SCM4)	42CrMo4-1.7225	4140	708M40/709M40/708A42/EN19	42CD4

2.4140 steel chemical composition

Standard	Grade	C	Si	Mn	P	S	Cr	Mo
ASTM A29	4140	0.38-0.43	0.15-0.35	0.75-1.00	≤ 0.035	≤ 0.04	0.8-1.1	0.15-0.25
	42CrMo4	0.38-0.45	≤ 0.4	0.6-0.90	≤ 0.025	≤ 0.035	0.9-1.2	0.15-0.30
EN10083	1.7225
JIS G4105	SCM440	0.38-0.43	0.15-0.35	0.6-0.85	≤ 0.035	≤ 0.04	0.9-1.2	0.15-0.30
GB 3077	42CrMo	0.38-0.45	0.17-0.37	0.5-0.80	≤ 0.035	≤ 0.035	0.9-1.2	0.15-0.25
BS 970	EN19	0.35-0.45	0.15-0.35	0.5-0.80	≤ 0.035	≤ 0.035	0.9-1.5	0.2-0.40

3.4140steel mechanical property
1.Tensile strength 655 MPa 95000 psi
2.Yield strength 415 MPa 60200 psi
3.Bulk modulus (typical for steel) 140 GPa 20300 ksi
4.Shear modulus (typical for steel) 80 GPa 11600 ksi
5.Elastic modulus 190-210 GPa 27557-30458 ksi
6.Poisson's ratio 0.27-0.30 0.27-0.30
7.Elongation at break (in 50 mm) 25.70% 25.70%
8.Hardness, Brinell 197 197
9.Hardness, Knoop (converted from Brinell hardness) 219 219
10.Hardness, Rockwell B (converted from Brinell hardness) 92 
11.Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) 13 13
12.Hardness, Vickers (converted from Brinell hardness) 207 207
13.Machinability (based on AISI 1212 as 100 machinability)

4.Specifications of our 4130 steel pipes

Specifications	ASTM A29 ASME SA29
Dimensions	ASTM, ASME and API
Size	OD 10.3-610mm  W. T.: 3 to 70mm
Length	3000-12000 as required
Type	Seamless / Fabricated
Form	Round, Hydraulic Etc
Length	Single Random, Double Random & Cut Length.
End	Plain End, Beveled End, Treaded
Surface	Black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE,ect
Packaging	Loose package, Packaged in bundles(3Ton Max) , bundled pipes with two slings at the both end for easy loading and discharging, End with Plastic caps or as per requirement
Application	1. Fluid pipe
	2. Power Plant
	3. Structure pipe
	4. High and low pressure Boiler tube
	5. Seamless pipe  /tube for petroleum cracking
	6. Conduit pipe
	7. Scaffolding pipe pharmaceutical andship,building etc.