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Quality ASTM A519 Seamless Stainless Steel Precision Pipe 4140 Cold Drawn Mechanical Steel Tubing factory
Quality ASTM A519 Seamless Stainless Steel Precision Pipe 4140 Cold Drawn Mechanical Steel Tubing factory
Quality ASTM A519 Seamless Stainless Steel Precision Pipe 4140 Cold Drawn Mechanical Steel Tubing factory

ASTM A519 Seamless Stainless Steel Precision Pipe 4140 Cold Drawn Mechanical Steel Tubing

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Stainless Steel Precision Pipe 4140
Product Summary
What Is ASTM A519? ASTM A519 is the American standard for seamless carbon and alloy steel mechanical tubing. It covers tubes manufactured for use as mechanical components, hydraulic cylinders, and precision-machined parts – not for fluid transport under pressure (that would be ASTM A179 or A213). ...

Product Details

Highlight:

Stainless Steel Precision Pipe 4140

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ASTM A519 Stainless Steel Precision Pipe

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Cold Drawn Mechanical Steel Tubing
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description
What Is ASTM A519?

ASTM A519 is the American standard for seamless carbon and alloy steel mechanical tubing. It covers tubes manufactured for use as mechanical components, hydraulic cylinders, and precision-machined parts – not for fluid transport under pressure (that would be ASTM A179 or A213).

The standard specifies requirements for:

  • Chemical composition
  • Mechanical properties
  • Dimensional tolerances
  • Heat treatment options

ASTM A519 Seamless Precision Steel Tube is produced as a cold-drawn seamless (CDS) tube, offering tight tolerances, smooth surfaces, and consistent mechanical properties. Common grades include 1020, 1026, 4130, and 4140.

Quick Facts Value
Standard ASTM A519
Process Seamless + Cold Drawn
Key Feature Precision tolerances, smooth finish
Primary Use Mechanical tubing, hydraulic cylinders
Grades 1020, 1026, 4130, 4140
Chemical Composition

ASTM A519 covers multiple grades. Below are the most common carbon and alloy grades with their specified compositions.

Carbon Steel Grades (ASTM A519)
Grade Carbon (C) Manganese (Mn) Phosphorus (P) Sulfur (S)
1010 0.08–0.13 0.30–0.60 ≤ 0.040 ≤ 0.050
1020 0.18–0.23 0.30–0.60 ≤ 0.040 ≤ 0.050
1025 0.22–0.28 0.30–0.60 ≤ 0.040 ≤ 0.050
1026 0.22–0.28 0.60–0.90 ≤ 0.040 ≤ 0.050
Alloy Steel Grades (ASTM A519)
Grade Carbon (C) Chromium (Cr) Molybdenum (Mo) Manganese (Mn)
4130 0.28–0.33 0.80–1.10 0.15–0.25 0.40–0.60
4140 0.38–0.43 0.80–1.10 0.15–0.25 0.75–1.00

ASTM A519 Seamless Precision Steel Tube Grade Selection Guide:

Grade Key Feature Typical Application
1020/1026 Good weldability and formability General mechanical tubing
4130 Higher strength, good toughness Aerospace, roll cages, shafts
4140 Highest strength, excellent hardenability Hydraulic cylinders, heavy-duty components
Mechanical Properties

Mechanical properties vary with grade, heat treatment, and cold-drawing reduction. Below are typical minimum values.

Carbon Steel Grades (As-Drawn or Normalized)
Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%)
1020 ≥ 420 ≥ 350 ≥ 15
1026 ≥ 450 ≥ 380 ≥ 15
Alloy Steel Grades (As-Drawn or Stress-Relieved)
Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%)
4130 ≥ 560 ≥ 460 ≥ 15
4140 ≥ 655 ≥ 415 ≥ 15

Values are minimums. Actual properties depend on tube size and heat treatment. Quenching and tempering can significantly increase strength – 4140 can achieve 900–1100 MPa tensile after proper heat treatment.

Comparison: Heat Treatment Effect on 4140
Condition Tensile Strength (MPa) Yield Strength (MPa) Hardness (HB)
As-cold-drawn 650–800 500–650 200–250
Stress-relieved (SR) 650–750 450–550 200–230
Quenched + Tempered (Q&T) 900–1200 750–1000 280–360
Dimensional Tolerances (ASTM A519)
Parameter Typical Tolerance
Outside diameter (OD) ± 0.10 mm to ± 0.50 mm (size dependent)
Wall thickness ± 10% to ± 12.5%
Inside diameter (ID) ± 0.25 mm to ± 0.50 mm (size dependent)
Straightness ≤ 1.0 mm per meter

For tighter tolerances, honing or skiving + roller burnishing is available.

Applications

Primary Use: Hydraulic cylinder barrels and mechanical components

Other Applications:

  • Precision shafts and sleeves
  • Machine tool components
  • Automotive parts (shock absorbers, steering)
  • Aerospace structural tubing (4130)
  • Heavy equipment cylinders

Quick Pick:

Need Choose
General mechanical tubing ASTM A519 1026
Hydraulic cylinder barrel ASTM A519 4140
Aerospace/roll cage ASTM A519 4130
Cost-sensitive application ASTM A519 1020
Quality Assurance

Every ASTM A519 tube we supply is backed by rigorous quality control and full traceability.

Testing & Inspection
Test Purpose
Chemical analysis Verify composition per standard
Tensile test Confirm yield, tensile, and elongation
Hardness test Check consistency (Brinell or Rockwell)
Flattening test Assess ductility
NDT (eddy current or ultrasonic) Detect surface and subsurface defects
Dimensional inspection Verify OD, ID, and wall thickness
Surface inspection Check for defects and surface finish
Certifications
  • EN 10204 Type 3.1 – Mill test certificate (standard)
  • EN 10204 Type 3.2 – Third-party verified (available on request)
  • Full traceability – Heat number traceable to the mill
Why Choose Us?
Advantage Detail
Stock availability Common sizes ready to ship
Custom cutting Cut to your exact lengths
Value-added services Honing, skiving, and burnishing are available
Technical support Engineering team for application advice
Global shipping Door-to-door delivery
Order Now

Request an ASTM A519 Seamless Precision Steel Tube Quote

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