Inconel 738
Inconel 738 properties and heat treatment forged piece, Including Inconel 738 application and specifications, We have all specifications，Including Inconel 738 steel plate, Inconel 738 sheet, Inconel 738 square steel, Inconel 738 flat bar,Inconel 738 round bar,Inconel 738 forgings, we can own production and sales.
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forged/hot rolling/ extrusion of steel
We can produce the Inconel 738 has the following specifications:
Round bar steel: 1mm to 3000mm
Square-shape steel: 1mm to 2000mm
Plate steel:0.1mm to 2500mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-219 mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
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Chemical composition % of the ladle analysis of grade Inconel 738 and Standards
General Characteristics of Inconel™ 738
Inconel™ 738 offers a combination of outstanding high-heat creep-rupture strength and corrosion resistance better than many high-strength superalloys with lower chromium content. This nickel-based alloy is vacuum-cast and precipitation-hardened, offering exceptional mechanical properties to 1800°F (982°C). IN-738 holds up to the hot corrosive environments found in the turbine industry.
Chemical Composition of Inconel™738
Carbon 0.15-0.20
Cobalt 8.00-9.00
Chromium 15.70-16.30
Molybdenum 1.50-2.00
Tungsten 2.40-2.80
Tantalum 1.50-2.00
Columbium 0.60-1.10
Aluminum 3.20-3.70
Titanium 3.20-3.70
Aluminum and titanium 6.50-7.20
Boron 0.005-0.015
Zirconium 0.05-0.15
Iron 0.50 max
Manganese 0.20 max
Silicon 0.30 max
Sulfur 0.015 max
Nickel remainder
Heat Treatment of Inconel™738
2050°F (1121°C) for 2 hours
Air cool
1550°F (843°C) for 24 hours
Air cool
Applications of Inconel™ 738
Gas turbine blades and vanes for industrial use
Machinability of Inconel™ 738
Sturdy and short drills, reamers, taps and end mills
Positive feeds with no tool dwelling
High-speed tools in turning operations
Carbide tools for tapping, reaming and drilling
Lubricate continuously
Chemical emulsions for turning
Chlorinated oil for tapping, reaming, drilling and milling
6000 rpm wheel speed for surface grinding, using highly sulfurized oil
Normal finish grinding techniques
Corrosion Resistance of Inconel™ 738
Exceeds strong superalloys
Resists oxidation to 2000°F (1093°C)
Improved sulfidation resistance up to 1800°F (982°C)
Demonstrated resistance atmospheres with hydrogen sulfide and sulfur dioxide to 1800°F (982°C)
Machining performance
Download Inconel 738 the mechanical properties of the report, the report provides detailed performance analysis and application. Download >>
Principal Design Features
One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.
Machinability
Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.
Heat Treatment
CONDITION A--Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool.. CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.
Welding
Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.
Forging
Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.