ASTM A519 Gr 4130 Mechanical Tubes

A519 Gr 4130 steel pipe is an alloy steel seamless pipe, mainly used in medium-sized machinery manufacturing industry, such as shafts, spindles, highly loaded control wheels, bolts, studs, gears, etc.

standard:ASTM

Surface :1. Galvanized 2. Black and Color Painting

introduction

What material is 4130 steel pipe?
4130 steel pipe corresponds to the domestic grade 30CrMo. 30CrMo is a medium-carbon alloy steel with high strength. It has high strength after quenching and tempering. Therefore, the welding rod must also be made of high strength, such as 707 or higher.
A519 Gr 4130 structural steel pipe has high strength and toughness, high hardenability, and the critical hardenability diameter in oil is 15~70mm; the thermal strength of the steel is also good, and it has sufficient high temperature strength below 500°C, but Its strength decreases significantly at 550°C. When the alloying elements are at the lower limit, the welding is quite good, but when it is close to the upper limit, the weldability is medium, and it needs to be preheated to above 175°C before welding. The machinability of the steel is good, and the plasticity is medium during cold deformation; during heat treatment, it is at 300~350C. The scope has the first type of temper brittleness; there is a tendency to form white spots.

Chemical composition of 4130 low alloy steel pipe:
Carbon C 028~0.33 Silicon si: 0.15~0.35 Mn: 0.40~0.60 S: Allowable residual content ≤0.040 Phosphorus P: Allowable residual content 0.035 Chromium Cr: 0.80~ 1.10 Nickel Ni: Allowable residual content <0.030 Copper Cu: Allowable residual content 0.030 Mo: 0.15~0.25
Mechanical properties of 4130 seamless steel pipe:
Tensile strength b (MPa): 930 (95) Yield strength os (MPa): 2785 (80) Elongation 65 (%): 212 Reduction of area (%): 250 Impact energy Akv (): 263 Impact toughness value akv (/cm2): 278(8) Hardness<229HB

Technical Data

Chemical Composition Of AISI 4130 Alloy Steel Pipe

AISI 4130	Ni	C	Mo	Mn	Si	Fe	Cu	S	P	Cr
AISI 4130	0.50 max	0.28-0.33	0.15-0.25	0.40-0.60	0.15-0.35	97.3-98.22	–	0.025 MAX	0.035 MAX	0.80-1.10

Mechanical Properties Of AISI 4130 Round Tubes

Density	Melting Point	Yield Strength (0.2% Offset)	Tensile Strength	Elongation
0.28	2580	460 MPa	560 MPa	20 %

Equivalent Grades For AISI Pipe

Standard	UNS	WERKSTOFF NR.	AFNOR	EN	JIS	BS
AISI 4130	G41300	1.7218	–	25CrMo4	JIS G4105	BS 970

company advantage

Gnee can deliver steel pipes in hot-rolled, controlled-rolled, normalized, annealed, quenched and tempered, normalized and tempered, fragmented, quenched and tempered states according to the customer's performance and requirements.
FAQ

What is A519 4130 material?

Steel grade 4130 ASTM A519 Steel Rectangular Tubing comprises chromium and molybdenum as strengthening agents in its alloy.

What are your advantages?
High quality products, competitive price and professional export service.

Do you have a quality control system?

Yes, we have our own quality control laboratory.