ASTM A519 4130 30CrMo Excellent Mechanical Seamless Alloy Steel Tube

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ASTM A519 4130 30CrMo Excellent Mechanical Seamless Alloy Steel Tube

Customization:	Available
Type:	Seamless
Technique:	Cold Drawn

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Product Description

Product Overview

Model NO.

ASTM A519

Material

Alloy Steel

Surface Treatment

Slightly Oiled

Section Shape

Round

Steel Grade

4130 / 30CrMo / 4140 / 42CrMo

Specification

OD2-60mm

HS Code

7304511001

Certificate

ISO 9001, TS16949

Detailed Description

Alloy Seamless Steel Pipe

Standard: ASTM A519

Material: 4130 / 4140

Description: 4140/42 and 4130 Mechanical Tubing are medium carbon alloy grades used for high tensile strength and toughness. Chromoly steel (4140) provides excellent resistance to fracturing, abrasion, and impact.

Delivery Condition

Cold drawn/hard (+C) (BK) Cold drawn/soft (+LC) (BKW) Stress relieved (+SR) (BKS) Annealed (+A) (GBK) Normalized (+N) (NBK) Quenched and Tempered (QT)

Advantages & Application

Key Applications

Commercial & Military Aircraft (engine mounts)
Automotive & Auto Racing Parts
Machine & Hydraulic Tools
Oil and Gas Industries (forged valve bodies and pumps)
Agricultural and Defense Industries

Technical Specifications

Material Chemical Composition (%)

Standard	Steel Grade	C	Si	Mn	P	S	Cr	Mo
ASTM A519	4130/30CrMo	0.28-0.33	0.15-0.35	0.40-0.60	≤0.04	≤0.04	0.8-1.1	0.15-0.25
ASTM A519	4140/42CrMo	0.38-0.43	0.15-0.35	0.75-1	≤0.04	≤0.04	0.8-1.1	0.15-0.25

Mechanical Performance

Condition	Tensile Strength (Mpa) Min	Yield Strength (Mpa) Min	Elongation (%) Min
SR (Stress Relieved)	724 - 855	-	10
A (Annealed)	517 - 552	379 - 414	25 - 30
N (Normalized)	621 - 855	441 - 621	20

Packaging & Shipping

Related Product Categories

Hydraulic Tubing Bundy Tube Automotive Tube Steel Forging Precision Pipe Stainless Pipe

Manufacturing Excellence

We operate advanced production lines utilizing specialized drawing techniques and oils to ensure the highest surface quality. With a total area of 150,000 square meters and a dedicated professional team, we guarantee precision steel tubes and forgings for various high-demand industrial sectors including Marine, Power, Petrochemical, and Hydraulic fields.

Frequently Asked Questions

How do you ensure the quality of the alloy steel tubes?

We maintain strict quality control through pre-production samples and a final inspection before every shipment. All products undergo double inspection by professional quality controllers to ensure they meet international standards.

What specific steel grades can you provide?

We specialize in ASTM A519 grades including 4130, 4140, 30CrMo, and 42CrMo, as well as various carbon steel grades like 1010, 1020, and 1045.

What are the typical applications for these tubes?

Our precision alloy tubes are widely used in commercial and military aircraft engine mounts, automotive parts, hydraulic tools, and forged components for the oil and gas industry.

What delivery conditions are available for seamless pipes?

We offer various conditions including Cold Drawn Hard (BK), Cold Drawn Soft (BKW), Stress Relieved (BKS), Annealed (GBK), and Normalized (NBK) to meet different mechanical requirements.

What payment and delivery terms do you accept?

We accept various delivery terms such as FOB, CFR, CIF, EXW, DDP, and DDU. Payment can be made via T/T, L/C, or MoneyGram in USD, EUR, HKD, or CNY.

Why choose your alloy tubes over other suppliers?

Our advanced production lines use special oils to ensure superior surface smoothness (lower roughness) and excellent mechanical performance. Every delivery is backed by detailed inspection reports.