Inconel X-750(Ni-Cr-Nb-W)

Post Views: 6

1. Introduce

– Precipitation hardening Ni-Cr alloy with additions of Al and Ti

– Similar to Inconel 600, but with higher tensile and creep rupture strengths due to the addition of Al and Ti

– Excellent corrosion and oxidation resistance and high strength up to a temperature range of -704°C

– UNS N07750

* Inconel

Features
– Resists oxidation and submersion in oxidizing and sulfurizing atmospheres above 900℃
– Non-corrosive to organic and salt solutions
– Excellent mechanical properties such as tensile and yield strength up to about 600℃
Applications
– High temperature heat resistant equipment(Heat treatment furnace, boiler, jet engine parts, electric heater parts)
Types
– Incoenl 600/601, Inconel 625, Inconel 690, Inconel 718, Inconel 718+, Inconel X-750, etc.

* UNS

Abbreviation for Unified Numbering Systems for Metals and Alloys
Unified unique 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

* UNS N07750 : 07XXX : Chromium(Precipitation-hardenable alloy)

2. Property

– High tensile strength, creep rupture strength, corrosion resistance, oxidation resistance, machinability, weldability, cryogenic mechanical properties

Element	Impact
Cr	Provides corrosion resistance, oxidation resistance
Nb	Highly strengthened element, provides strength
W	Highly strengthened element, provides high temperature creep properties

[Inconel X-750 Chemical Composition (%)]

Ni	Cr	Fe	C	Al	Ti
Bal.	14.0~17.0	5.0~9.0	Max. 0.08	0.40~1.0	2.25~2.75

Cu	Si	Mn	S	Co	Nb
Max. 0.5	Max. 0.5	Max. 1.0	Max. 0.01	Max. 1.0	0.70~1.20(Nb+Ta)

[Inconel X-750 Mechanical Properties]

Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)
910	550	25

[Inconel X-750 Physical Properties]

Density (g/㎤)	Melting Range (℃)	Specific Heat (0-100℃), J/kg*℃
8.28	1393~1427	431

3. Standard & Specification

– Specification : UNS N07750

Product Form	ASTM	ASME	SAE	EN	BS
Bar, Rod, Forgings	B637	SB637	AMS 5667-5671, AMS 5747	10269	–
Plate, Strip, Sheet	–	–	AMS 5542, AMS 5598	–	–
Wire	–	–	AMS 5698, AMS 5699	–	HR 505

4. Available Form

– Bar, Rod, Forgings

– Plate, Strip, Sheet

– Wire

– Tube, Pipe

5. Application & Product

– Aerospace

Applicaton	Product
Aerospace	High temperature spring materials, Bolts, Gas turbine blades, Rocket engines, High pressure vessels, Gas turbines, Rotor blades, Rotor wheels, Bolts