Product Categories

Stainless Steel Condenser Tube

[38]

Seamless Boiler Tubes

[37]

Contact Now

Changzhou Joyruns Steel Tube CO.,LTD

Visit Website

City:changzhou

Country/Region:china

Contact Person:MissLisa

View Contact Details

Contact Now

China SAE4140 QT Seamless Precision Steel Tube EN10083-3 Seamless Galvanized Steel Pipe 48*11mm wholesale

SAE4140 QT Seamless Precision Steel Tube EN10083-3 Seamless Galvanized Steel Pipe 48*11mm

Name: SAE4140 QT Seamless Precision Steel Tube EN100833 Seamless Galvanized Steel Pipe 4811mm
Brand: Joyruns
Price: 1 USD

Ask Latest Price

Video Channel

Brand Name :Joyruns

Model Number :6mm --137mm

Certification :ISO9001

Place of Origin :Changzhou

MOQ :2Tons

Payment Terms :L/C, T/T

Supply Ability :2000Tons/Month

Delivery Time :20days

Packaging Details :plastic packing, end caps, wooden box packing

Standard :DIN2391, EN10305, EN10216, EN10210,EN10083-3

Material :SAE4140, 42CrMo4, CK45,E235C,ST35

OD SIZE :6MM--137MM

WT :1MM--30MM

Length :according customer

Divery condition :+BK,+C,+NBK,+QT,+N,+LC

Contact Now

Add to Cart

View Product Description

SAE4140+QT EN10083-3 Cold drawing Precision steel tube

4140 alloy steel material is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon alloy steel, Oil Quenched & Tempered Hardness is 28-34 HRC.4140 Annealing delivery hardness less than 250HB.

These chromium-molybdenum alloys are among the most widely used and versatile machinery steels. The chromium content provides good hardness penetration and the molybdenum imparts uniformity of hardness and strength. They respond readily to heat treatment and tensile strengths in order of 170,000 psi (1172 N/mm2) for small sections and 140,000 psi (965 N/mm2) for larger sections are attainable, all combined with good ductility and resistance to shock. They may be used in both high and low-temperature applications and also in sour gas environments with appropriate heat treatments.
In the hardened and tempered condition, these steels possess good wear resistance which may be considerably increased by flame or induction hardening. Alternatively, they may be nitrided. In the annealed condition, bars are supplied to a hardness of HB 207 approximately. Some sizes may be calcium-treated. The 4140 Product is also available in a precision ground surface finish (25RMS Max).

Chemical Composition of AISI 4140 QT Tubing

Standard	Grade	C	Mn	P	S	Si	Ni	Cr	Mo
ASTM A29	4140	0.38-0.43	0.75-1.00	0.035	0.040	0.15-0.35	–	0.8-1.10	0.15-0.25
EN 10250	42CrMo4/ 1.7224	0.38-0.45	0.6-0.9	0.035	0.035	0.4	–	0.9-1.2	0.15-0.30
JIS G4105	SCM440	0.38-0.43	0.60-0.85	0.03	0.03	0.15-0.35	–	0.9-1.2	0.15-0.30

Mechanical Properties of SAE 4140 QT Tube

Properties	Metric	Imperial
Tensile strength	655 MPa	95000 psi
Yield strength	415 MPa	60200 psi
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	25.70%	25.70%
Hardness, Brinell	197	197
Hardness, Knoop (converted from Brinell hardness)	219	219
Hardness, Rockwell B (converted from Brinell hardness)	92	92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	13	13
Hardness, Vickers (converted from Brinell hardness)	207	207
Machinability (based on AISI 1212 as 100 machinability)	65	65