4130 Aircraft Quality Manufacturer & Supplier
Chrome-moly aircraft tubing and sheet steel: modest strength, excellent weldability and well understood repair practice, which is why it still dominates tubular airframe and ground structure work.
UNS: AMS 6345 / AMS 6360 · UNS G41300 | Category: High Tensile Alloy Steel
Size Range
Outer Diameter: Sheet and plate 0.5-25 mm · tube 6-100 mm OD · bar 10-200 mm
Chemical Composition (%)
| C | Cr | Mo | Mn |
|---|---|---|---|
| 0.28-0.33 | 0.80-1.10 | 0.15-0.25 | 0.40-0.60 |
Mechanical Properties
- Tensile Strength
- 655 MPa min (normalised)
- Yield Strength
- 435 MPa min
- Elongation
- 20% min
- Hardness
- 197 HBW typical
Applicable Standards
- AMS 6345
- AMS 6371
- ASTM A519
- AMS 2750
- EN 10204 3.1
Applications
- Tubular airframe and engine mounts
- Landing gear and strut components
- Ground support and jig structures
- Control linkages and fittings
- Repair and MRO stock
Industries Served
- Airframe & Structures
- Engine & Propulsion
- Space & Launch
- Defence Aerospace
- MRO & Overhaul
- Ground Support Equipment
Equivalent Grades
- AMS 6345
- AMS 6345
- AMS 6360
- AMS 6360
- AMS 6371 (tube)
- AMS 6371 (tube)
- UNS G41300
- UNS G41300
- AISI 4130
- AISI 4130