AMS 5662 / Inconel 718 Nickel Alloy Bar
High-Quality AMS 5662 / Inconel 718 Nickel Alloy Bar Supplier
– Lork Group | Free Samples & Competitive Pricing
AMS 5662 is a widely recognized aerospace material specification that defines the requirements for a high-performance nickel-chromium alloy known as Inconel 718. This alloy is a precipitation-hardenable nickel-based superalloy that maintains excellent mechanical properties even in high-stress environments. It is particularly valued for its resistance to post-weld cracking, making it suitable for complex fabricated components. Lork Group stocks Alloy 718 (AMS 5662 and 5663) bar between 0.5 – 12.0 dia.
Specifications
Werkstoff Nr 2.4668
AMS 5596 Sheet, Strip and Plate
AMS 5597 Sheet, Strip and Plate
AMS 5589 Seamless Tube
AMS 5590 Seamless Tube
AMS 5662 Bars, Forgings and Rings
AMS 5663 Bars, Forgings and Rings
AMS 5664 Bars, Forgings and Rings
AMS 5832 Welding Wire
ASTM B637 Forgings
ASTM B670 Plate, Sheet and Strip
Chemical Composition
| Weight % | C | Mn | P | S | Si | Cr | Ni | Mo | Cb | Ta | Ti | Al | Co | B | Cu | Fe |
| Alloy 718 AMS 5662 |
0.08 | 0.35 | 0.015 | 0.015 | 0.35 | 17-21 | 50-55 | 2.8-3.30 | 4.75-5.50 | 0.05 | 0.65-1.15 | 0.20-0.80 | 1.00 | 0.006 | 0.30 | Rem |
Mechanical Properties
There are two main types of solution annealed and aging treatments:
1. Solution Treatment (AMS 5662 Bar / AMS 5596 Sheet): 1725°F - 1850°F + Air Cool.
Heat Treatment (AMS 5663 Bar) : 1325°F for 8 hrs, cooling 100°F/hr to 1150°F, hold at 1150°F for 8hrs min, + Air Cool .
This treatment gives the highest room temperature tensile and yield strengths as well as producing the highest fatigue strength. It is the optimum heat treatment for Alloy 718 where a combination of rupture life, notch rupture life and rupture ductility is required.
2. Alternative Solution Treatment (AMS 5664 Bar / AMS 5597 Sheet): 1900°F - 1950°F + Air Cool
Heat Treatment: 1400°F for 10hrs, furnace cool to 1200°F, hold at 1200°F for a total aging time of 20 hrs + Air Cool.
This is the prefered treatment in tensile-limited applications as it produces the best transverse ductility in heavy sections, impact strength and low temperature notch tensile strength. However, this treatment has a tendency to produce notch brittleness in stress rupture.
| Material | Condition | Tensile Strength ksi |
Yield Strength ksi |
Elongation 4D |
Reduction of Area % |
Hardness |
| AMS 5662 Bar | 1700-1850°F Anneal | - | - | - | - |
≤ 277 HB |
| AMS 5663 Bar | 1700-1850°F Anneal + Age | 185 | 150 | 12 | 15 | ≥331 HB |
| AMS 5664 Bar | 1900-1950°F Anneal | - | - | - | - | 3" dia 248 HB 3-5" dia 285 HB |
| 1900-1950°F Anneal + Age | 180 | 150 | 10 | 12 | ≥341 HB |
Heat Treatment Options for AMS 5662
AMS 5662 represents the softest, most machinable condition of Inconel 718. However, it can be heat-treated into AMS 5663 for enhanced strength. Two primary aging methods are used:
- Standard Aging (For Optimal Tensile & Creep Resistance)
- Increases hardness to 36-43 HRC
- Improves high-temperature performance
- Alternative Aging (For Improved Impact Toughness)
- Balances strength with fracture resistance
- Used in applications requiring shock resistance
Lork Group is a trusted supplier of high-performance nickel-chromium superalloy bars, offering solution-treated (AMS 5662) and aged (AMS 5663) conditions for aerospace, oil & gas, and industrial applications.
Why Choose Lork Group for Inconel 718 Alloy Bar?
- Wide Size Range: Stocking 0.5" – 12.0" diameter bars
- Multiple Conditions: AMS 5662 (annealed) & AMS 5663 (aged)
- Superior Properties: High strength, corrosion resistance, and weldability
- Fast Delivery: Reliable global supply chain
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