4130 Tubing to ASTM Standards
There is no single "ASTM standard for 4130". The grade appears in several standards, each written for a different product form, and the right one depends on what you are buying.
ASTM Standards Relevant to 4130
The following ASTM standards may apply to 4130 alloy products:
| ASTM Standard | Product Form | Relevance to 4130 |
|---|---|---|
| ASTM A519 | Seamless mechanical tubing (CDS and HFS) | Primary standard for 4130 tube |
| ASTM A29 | Hot-rolled and cold-finished bar | 4130 bar/rod stock |
| ASTM A213 | Seamless ferritic/austenitic alloy steel boiler tubes | Different alloy focus — not typical for 4130 tube |
| ASTM A335 | Seamless alloy steel pipe for high-temp service | Pipe (NPS), not mechanical tube |
| Note | Confirm which standard applies to your product form and application |
Specifying 'ASTM Standards' Without a Specific Reference
A purchase order stating '4130 tubing to ASTM standards' without identifying the specific standard requires the supplier to infer the applicable document. The supplier will typically apply ASTM A519 for seamless tube. To avoid ambiguity and ensure the correct standard is applied, always state the specific ASTM standard number on the purchase order.
Standards by Product Form
| Product form | Commercial standard | Notes |
|---|---|---|
| Seamless mechanical tubing | ASTM A519 | The usual standard for 4130 tube |
| Bar | ASTM A29 with related alloy bar specifications | General requirements for steel bars |
| Plate | ASTM A829 | Alloy structural steel plate |
| Aircraft tubing | AMS-T-6736, AMS 6360 | Aerospace requirements with mandatory properties |
| Aircraft sheet and plate | AMS 6350 and related | Aerospace sheet, strip and plate |
Pick the standard that matches the form, then add the grade, dimensions and condition. If a drawing quotes a standard that does not fit the form you are buying, for instance a bar standard on a tube item, raise it with the designer instead of guessing the intent.
Editions change, so state the year or "latest edition" and check the current document for exact requirements. Individual standards are described under ASTM A519 and ASTM A29; aircraft requirements under 4130 aircraft tubing.
Frequently Asked Questions
What ASTM standard should I reference for 4130 aerospace tubing?
For FAA-certificated aircraft structural applications, the standard is AMS-T-6736 (not an ASTM standard). For other aerospace applications and general structural use, ASTM A519 is the primary reference. Verify the applicable specification with the design authority or aircraft inspector.
Which ASTM standard covers 4130 tubing?
ASTM A519, the specification for seamless carbon and alloy steel mechanical tubing.
Are AMS and ASTM standards interchangeable?
No. AMS specifications for aerospace carry additional mandatory requirements.
Which standard covers 4130 plate?
ASTM A829 covers alloy structural steel plate, including 4130.
Should I state the year of the standard?
State the edition or "latest edition" so there is no doubt which requirements apply.
Source 4130 Tubing to ASTM A519
Specify ASTM A519, Grade 4130, form, OD, wall, condition, and MTC for an accurate quotation.
- Standard: ASTM A519
- Grade: 4130
- Form: CDS or HFS
- OD & Wall
- Condition
- MTC
- Delivery