01
Seamless Rolled Ring
Ring rolled from a punched blank with no welded seam in the wall.
Request Availability →Inconel X-750 Rings
Seamless rolled rings in three cycles for turbine seals, retaining rings and hot pressure parts.
Three Strengths, One Ring
A single Inconel X-750 ring reaches 965, 1103 or 1170 MPa minimum tensile once the mill fixes the cycle.
Rolled to Size
We roll X-750 rings from 100 to 1,000 mm outside diameter to the wall your drawing states.
Grain Follows the Hoop
Rolling aligns the grain of the ring around the circumference, where the hoop stress acts.
PRODUCT OVERVIEW
About Inconel X-750 Rings
Inconel X-750 rings ship in UNS N07750, a precipitation-hardening nickel-chromium-iron alloy. Titanium and aluminium build the gamma-prime precipitate inside this ring. Niobium then slows its coarsening, so the ring holds strength to 704 °C.
We supply Inconel X-750 rings to ASTM B637 and AMS 5667 in the Type 1, Type 2 and Type 3 conditions. Consequently, the ordered cycle decides the strength level of the ring, and we record it on the purchase order before production.
Meanwhile, the Inconel X-750 Bar and Rod hub also lists this ring beside the other forms. The European call-out NiCr15Fe7TiAl maps to the same UNS N07750 material as this ring.
PRODUCT FEATURES
Key Features of Inconel X-750 Rings
Inconel X-750 rings are supplied in UNS N07750, the precipitation-hardening nickel-chromium-iron alloy strengthened by gamma prime. Titanium, aluminium and niobium build the precipitate that holds strength to 704 °C. Southerly Alloy supplies and exports X-750 rings to ASTM B637 and AMS 5667 in the Type 1, Type 2 and Type 3 conditions, with EN 10204 3.1 paperwork on every heat.
Inconel X-750
Three Cycles on One Ring
Type 2, Type 3 and Type 1 deliver 1170, 1103 and 965 MPa minimum tensile for Inconel X-750 rings in that order.
01
Hoop Strength
Specifically, rolling orients the grain of the ring along the circumference where hoop stress acts.
02
Creep Life Above 593 °C
Moreover, the stabilised Type 1 route guards the creep strength of a ring that runs hot for years.
03
Seal Faces Machined
Therefore, we machine the ring faces and bores to the flatness your seal drawing states.
04
Aging Record Shipped
Each ring lot travels with the furnace chart for its own solution treatment and age.
05
Dimensional Report
In addition, a diameter and wall thickness report travels with every ring lot.
06
Ring and Disc Blanks
In fact, the same forging cell supplies ring blanks and disc blanks.
07
Soundness Checked
Ultrasonic inspection looks for internal defects in each ring before release.
08
WHY CHOOSE US
Why Choose Inconel X-750
Sourcing Inconel X-750 rings depends on fixing the cycle and the rolling route before the billet is punched. Where the seal runs above 593 °C, the stabilised route protects creep life.
01
Cycle Fixed at Order
Grade, ring diameter, wall and cycle enter the purchase order at the same time.
02
Certificate Names the Treatment
Consequently, each certificate records the solution and aging that the mill applied to that ring heat.
03
Rolling Route Agreed
In addition, we agree the ring reduction and the rolling temperature range before the ring is worked.
04
Export Papers in One Set
Quotations for Inconel X-750 rings include the packing list, mill certificate and export documents.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
One melt feeds every ring, and the ordered cycle then sets the final properties. Because titanium and aluminium oxidise easily, melting control for X-750 rings matters as much as the rolling schedule.
01
Charge Selection
Weighed nickel, chromium, iron, titanium and aluminium enter the melt that will become this ring order.
02
Melt and Refine
Vacuum induction melting holds titanium and aluminium inside a narrow window on every ring heat.
03
Remelt for Cleanliness
Consumable electrode or vacuum arc remelting follows, and the certificate records the route taken for the ring.
04
Upset and Punch
The ring blank is upset and punched so that the wall carries no seam.
05
Ring Rolling
A mandrel rolls the blank out to the ordered ring diameter and wall thickness.
06
Solution Treatment
The ring holds at 982, 1093 or 1149 °C, as the ordered Type requires.
07
Stabilising and Aging
Consequently, the Type 1 route adds a hold near 843 °C, and every ring then ages near 704 °C.
08
Machine and Test
Finally, we machine the ring faces, gauge the diameter and release the lot against the mechanical values.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Southerly Alloy supplies Inconel X-750 rings across the diameter and wall ranges that ASTM B637 covers. We confirm ring diameter, wall thickness and finish against your order before production.
20,000+ m2
Site Area
Melting, forging, ring rolling and heat treatment for Inconel X-750 rings sit inside one boundary.
50+
Bar Line Machines
Presses, ring rollers, mandrels and lathes cover the ring sizes we make.
600 Tons
Monthly Tonnage
Custom ring heats and open-die campaigns share one calendar.
30+
Technical Staff
A metallurgist reviews every X-750 ring enquiry before the offer leaves.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Chemistry and heat treatment decide these ring properties together, so our laboratory checks both. Therefore, the certificate reports the cycle that produced the ring values.
01
Chemistry on the Heat
The laboratory reads titanium, aluminium and niobium in the ring heat, then records each figure against the ASTM table.
02
Mechanics After Aging
Specifically, tensile and yield values for this ring come from aged stock rather than solution-treated material.
03
Wall and Diameter
In addition, we gauge ring diameter, wall thickness and flatness against the drawing tolerances.
04
Furnace Chart Attached
Consequently, every ring certificate carries the solution and aging record for the same heat.
PRODUCT FORMS
Available Product Forms
Different ring conditions suit different seal and retaining duties. Therefore, the list below shows the Inconel X-750 Rings variants we quote most often.
02
Ring, Aged
Rings delivered in the Type 2 or Type 3 condition for immediate service.
Request Availability →
03
Ring, Soft
Solution-treated rings for buyers who machine first and age afterwards.
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04
Machined Ring
Rings turned, bored and faced to the finished drawing.
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05
Ring Blank
Forged blanks for buyers who finish the ring in their own shop.
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06
Custom Ring
Custom Inconel X-750 rings produced against your own specification.
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APPLICATIONS
Engineered For Demanding Industries
Turbine seal duty and nuclear core hardware are where Inconel X-750 rings have served longest. Meanwhile, the engine trade relies on this ring stock wherever hoop load must survive thermal cycling.
Discuss Your Application →
01
Turbine Seal Rings
Seal rings rolled from X-750 rings that hold clearance under heat.
02
Retaining Rings
Retaining rings that carry hoop load at temperature.
03
Nuclear Hold-Down Rings
Rings that hold core hardware inside the vessel.
04
Spring Rings
Ring springs that keep load through thermal cycling.
05
Combustor Rings
Rings machined for combustor and casing joints.
06
Cryogenic Rings
Rings for duty well below −100 °C.
07
Heat Treatment Fixtures
Ring-shaped fixtures that survive repeated furnace cycles.
08
Rocket Engine Hardware
Rings machined for thrust chamber joints.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The limits come from ASTM B637, which shares one composition table with the AMS documents for UNS N07750. Titanium and aluminium set the gamma-prime volume in this ring, while niobium slows its coarsening.
Iron balances the matrix, and the nickel plus cobalt floor keeps this ring austenitic. The full composition table on the Inconel X-750 material page lists every element against its ASTM limit.
Mechanical Properties
The rows below reproduce ASTM B637 Table 3 for UNS N07750 and apply to ring forgings in the same way as to bar. Wall thickness matters for Type 2, because a heavy ring section relaxes to a lower elongation floor. Every value below is a minimum unless the row states a range.
| Product Form | Condition | Tensile Strength, min. | Yield Strength (0.2%), min. | Elongation, min. | Hardness |
|---|---|---|---|---|---|
| Ring forging, ASTM B637 Type 2 | Solution treated at 982 °C, aged | >=170 ksi (1170 MPa) | >=115 ksi (790 MPa) | 18% | 302-363 HB |
| Ring forging, ASTM B637 Type 3 | Solution treated at 1093 °C, aged | >=160 ksi (1103 MPa) | >=100 ksi (689 MPa) | 20% | 267-363 HB |
| Ring forging, ASTM B637 Type 1 | Solution treated at 1149 °C, stabilised, aged | >=140 ksi (965 MPa) | >=90 ksi (620 MPa) | 8% | 262 HB min. |
Type 2 holds over ring walls up to 63.5 mm, and heavier rings relax to 15% elongation and 15% reduction of area. Type 1 trades tensile strength for creep life above 593 °C, which explains its lower elongation floor. We cut the mechanical test pieces from the ring wall. Hardness ranges are informative only.
Physical Properties
Design work leans on the published figures for this grade, and density sits at 8.28 g/cm³. Moreover, the magnetic behaviour of this ring changes with the heat treatment applied, so the Curie temperature follows the cycle.
The physical properties table on the Inconel X-750 material page carries the remaining values, including the modulus and the thermal expansion.
Heat Treatment
Inconel X-750 is precipitation hardened, so the cycle rather than a simple anneal sets its final strength. We supply the stock in the condition below that your duty needs.
| Condition | Typical Treatment |
|---|---|
| Type 2 (single age) | Solution treated at 982 °C, then aged near 704 °C |
| Type 3 (single age) | Solution treated at 1093 °C, then aged near 704 °C |
| Type 1 (stabilised) | Solution treated at 1149 °C, stabilised near 843 °C, then aged |
| Solution treated only | Soft stock for buyers who machine and age afterwards |
Standards
ASTM B637 is the principal UNS N07750 bar specification, and the AMS 5667 group covers the same forms by melting route. The three designations below settle most enquiries.
| Standard | Product or Application |
|---|---|
| ASTM B637 / ASME SB637 | Bars, forgings, and forging stock for moderate or high temperature service |
| AMS 5667 | Bars, forgings, and rings, equalized and precipitation hardenable |
| UNS N07750 - W.Nr. 2.4669 - NiCr15Fe7TiAl | Material designations |
The full standards list on the Inconel X-750 material page adds the AMS 5668 group, the NACE sour service qualification and the Chinese and Japanese designations.
Pyromet X750, Nickelvac X750, Nicrofer 7016 TiNb, and Inconel are trademarks of their respective owners. We quote those names for reference only, and our deliveries follow the ASTM and AMS documents listed above.
The standard text from ASTM International settles any acceptance question.
Dimensions
Because ASTM B637 prints its own scope, the ring ranges below follow that text rather than one house rule. For that reason, state the ring diameter, the wall thickness and the ordered quantity on the enquiry.
| Product Form | Typical Supply Range |
|---|---|
| Rolled ring | 100-1,000 mm outside diameter to ASTM B637 |
| Ring, heavy wall | Radial thickness above 60 mm produced to drawing |
| Machined ring | Rings turned, bored and faced to finished size |
| Ring blank | Forged blanks for buyer machining |
Ring blanks ship to the outside diameter, wall thickness and finished height on the drawing. Therefore, the rolled or forged route follows from the section you need.
Surface Finishes
Finish follows the operation that comes next rather than a catalogue default. Moreover, we agree the surface of this ring with your order.
| Surface Condition | Typical Use |
|---|---|
| Hot-worked | As-rolled or as-forged surface on this ring where machining follows. |
| Solution treated and pickled | Standard delivery for this ring in high-temperature service. |
| Centerless ground | Tight diameter and straightness on this ring used as shafting. |
The same material is also offered as forged bar, round bar and wire.
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 8 Simple Steps
Eight steps carry a ring enquiry from the first message to the delivered lot. Therefore, state the ring duty first, and the cycle then follows from it.
1
State the Duty
Give the service temperature, the load and the medium that the ring will meet.
2
Name the Form
Tell us that the order is X-750 rings rather than bar, plate or wire.
3
Fix the Cycle
We agree Type 1, Type 2 or Type 3 for the ring against that duty.
4
Check the Offer
The quotation states the ring price per kilogram, the lead time and the certificate set.
5
Confirm the Specification
Grade, ring diameter, wall thickness and inspection level enter the order acknowledgement.
6
Charge and Melt
The melt shop weighs the charge and takes the ring heat through melting and remelting.
7
Roll and Test
The ring passes the ordered rolling schedule, the heat treatment and release testing.
8
Follow the Load
Finally, the desk tracks the ring shipment and forwards the documents ahead of arrival.
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which standard covers Inconel X-750 Rings?
ASTM B637 governs the bar, forging and ring forms of UNS N07750. In addition, the AMS 5667 group covers the same forms by melting route and solution treatment.
Which heat treatment should I order for Inconel X-750 Rings?
Type 2 suits ring below about 593 °C, because it carries the highest tensile floor at 1170 MPa. Above that temperature, the stabilised Type 1 cycle is the better choice.
What sizes of Inconel X-750 Rings can you supply?
Rolled rings run from 100 to 1,000 mm outside diameter to ASTM B637, and the wall thickness follows your ring drawing.
How is a ring made without a seam?
We punch a hole through an upset billet and then roll the wall out on a mandrel. As a result, the ring wall carries no welded seam.
What does the Type 1 cycle add to ring?
It adds a stabilising hold near 843 °C after the solution treatment of the ring. Consequently, the Type 1 route protects creep life above 593 °C at some cost in tensile strength.
Can you supply Inconel X-750 Rings in the unaged condition?
Yes. The AMS bar documents cover solution-treated and equalized conditions for buyers who machine the ring parts first and age them afterwards.
What is your MOQ for Inconel X-750 Rings?
A single piece or one coil covers most stock sizes of ring, so a short cut is enough for a trial.
What are your trade terms for Inconel X-750 Rings?
We quote ring mainly on FOB terms, and EXW or CIF follow on request.
What is the lead time for Inconel X-750 Rings?
Stock ring ships in 7 to 15 days, and made-to-order material runs about 25 days.
Do you provide EN 10204 3.1 or 3.2 certificates for Inconel X-750 Rings?
Yes. Every heat ships with an EN 10204 3.1 certificate, and we arrange 3.2 endorsement on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the ring diameter, the wall thickness and the service temperature. The quotation carries the ring price, the lead time and the certificate set. Because the cycle decides the acceptance level for this ring, name the Type at enquiry.
A single X-750 ring proves the grade before a plant-wide commitment.
