1. Introduce
– Ni – Cr alloy designed to improve high – temperature creep – rupture strength and weldability
– Excellent high temperature strength, corrosion and oxidation resistance, and creep strength at temperatures up to 850°C
– Good strength and weldability at approximately 980°C
– UNS N06939
* UNS
- Abbreviation of Unified Numbering Systems for Metals and Alloys
- Unified numbering system for metals and alloys
- A representative number that is compatible with metals and alloys defined in many material – related codes such as ASTM, AISI, ASME, AWS, etc.
* N : Nickel and nickel alloys
* 939 : N06939 : 06XXX : Chromium (Hastelloy, Nichrome, Inconel, some with additional element)
(The last two or three digits of the six UNS numbers are used as the alloy model number)
*Inconel
1. Features
– Resists oxidation and submersion in oxidizing and sulfurizing atmospheres above 900°C
– Non-Corrosive to organic and salt solutions
– Excellent mechanical properties such as tensile and yield strength up to about 600°C
2. Applications
– High temperature heat resistant equipment(Heat treatment furnace, boiler, jet engine parts, electric heater parts)
3. Types
– Inconel 600/601, Inconel 625, Inconel 690, Inconel 718, Inconel 718+, Inconel X-750, etc.
2. Property
– Provides high temperature strength, corrosion resistance, oxidation resistance, fatigue performance, creep strength, chloride formula and crevice corrosion cracking resistance
| Element | Impact |
|---|---|
| Ni | Provides strength, toughness, corrosion resistance, and heat resistance |
| Cr | Provides high temperature oxidation resistance |
| W | Provides strength, creep resistance |
| Ta | Provides strength, creep resistance, heat resistance, and corrosion resistance |
[Inconel 939 Chemical Composition (%)]
| Ni | Cr | C | Al |
|---|---|---|---|
| 41.95 ~ 54.00 | 22.00 ~ 23.00 | Max. 0.15 | 1.00 ~ 3.00 |
| Ti | Si | Mn | Co |
|---|---|---|---|
| 3.00 ~ 4.50 | Max. 0.50 | Max. 0.50 | 18.00 ~ 20.00 |
| Nb | W | Ta | Zr |
|---|---|---|---|
| 0.50 ~ 1.50 | 1.00 ~ 3.00 | 1.00 ~ 1.80 | Max. 0.10 |
[Inconel 939 Mechanical Properties]
| Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|
| 1100 | 1500 | 13.00 |
3. Standard & Specification
– Specification : UNS N06939
| ASTM | B446, B443, B564, F467, F468 |
| ASME | SB446, SB443, SB564, F467M, F468M |
| AMS | 5666 |
4. Available Form
– Bar & Tube
– Plate & Sheet & Strip
– Wire & Coil
– Powders
5. Application & Product
– Aerospace, Oil & Gas
| Application | Product |
|---|---|
| Aerospace | Jet Engine Fan Blades, Gas Turbine Blades, Exhaust System Components |
| Oil & Gas | Downhole tools, Valves, Pump Impellers |
(1) Gas Turbine Blades / (2) Jet Engine Fan Blades / (3) Pump Impellers / (4) Valves / (5) Downhole Tools
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