01
Solution-Treated Round Bar
Soft stock for round bar parts that the buyer machines first and ages afterwards.
Request Availability →Inconel X-750 Round Bar
Gamma-prime strengthened nickel-chromium rounds in three heat-treatment cycles for bolts, shafts and hot parts.
Three Strengths, One Bar
A single Inconel X-750 round bar reaches 965, 1103 or 1170 MPa minimum tensile once the mill fixes the cycle.
Cycle Written on the Certificate
Each Inconel X-750 round bar lot ships with the furnace record for its own solution and aging treatment.
Diameter Stock Ready
We hold Inconel X-750 round bar from 6 to 300 mm diameter for shafts, bolts and machined parts.
PRODUCT OVERVIEW
About Inconel X-750 Round Bar
Inconel X-750 round bar ships in UNS N07750, a precipitation-hardening nickel-chromium-iron alloy. Titanium and aluminium build the gamma-prime precipitate inside this round bar. Niobium then slows its coarsening, so the round bar keeps useful strength at 704 °C.
We supply Inconel X-750 round bar to ASTM B637 in the Type 1, Type 2 and Type 3 conditions. Consequently, the ordered cycle decides the strength level, and we record it on the purchase order before production starts.
Meanwhile, the Inconel X-750 Bar and Rod hub also lists this round bar beside the other forms. The European call-out NiCr15Fe7TiAl maps to the same UNS N07750 material as this round bar.
PRODUCT FEATURES
Key Features of Inconel X-750 Round Bar
Inconel X-750 round bar is supplied in UNS N07750, the precipitation-hardening nickel-chromium-iron alloy strengthened by gamma prime. Titanium, aluminium and niobium form the precipitate that holds strength to 704 °C. Southerly Alloy supplies and exports X-750 round bar to ASTM B637 in the Type 1, Type 2 and Type 3 conditions, with EN 10204 3.1 documentation on every heat.
Inconel X-750
Three Cycles on One Bar
Type 2, Type 3 and Type 1 deliver 1170, 1103 and 965 MPa minimum tensile for Inconel X-750 round bar in that order.
01
Creep Life Above 593 °C
Specifically, the stabilised Type 1 route protects the creep strength of X-750 round bar where the part runs hot for years.
02
Round Stock for Turning
Therefore, Inconel X-750 round bar feeds lathes and CNC machines that cut shafts and fasteners.
03
No Molybdenum on the Certificate
Moreover, titanium and aluminium carry the strengthening, so the melt report for this round bar lists no molybdenum.
04
Aging Record Attached
Each round bar lot travels with the furnace chart for its own solution treatment and age.
05
Machining in the Aged State
The hardened round bar matrix machines with carbide tooling rather than heavy roughing cuts.
06
Heavy Sections Move to Forging
In fact, X-750 rounds above the bar scope ship as forged product under the same standard.
07
Diameter Held to Drawing
We hold the round bar diameter and straightness against the tolerance on your drawing.
08
WHY CHOOSE US
Why Choose Inconel X-750
Sourcing Inconel X-750 round bar depends on matching the cycle to the duty before anyone cuts the bar. Where the bolt sees long service above 593 °C, the stabilised route guards creep life.
01
Cycle Fixed at Order
Grade, diameter and cycle enter the purchase order, because one X-750 round bar reaches three strength levels.
02
Certificate Names the Treatment
Consequently, each certificate records the solution and aging that the mill applied to that round bar heat.
03
Stock and Make-to-Order
In addition, one enquiry covers standard round bar diameters and custom-cut lengths of X-750 stock.
04
Export Papers in One Set
Quotations for Inconel X-750 round bar include the packing list, mill certificate and export documents.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
One melt feeds every round bar section, and the ordered cycle then sets the final properties. Because titanium and aluminium oxidise easily, melting control for X-750 round bar matters as much as the hot-working schedule.
01
Charge Selection
Weighed nickel, chromium, iron, titanium and aluminium enter the melt that will become this round bar order.
02
Melt and Refine
Vacuum induction melting holds titanium and aluminium inside a narrow window on every round bar heat.
03
Remelt for Cleanliness
Consumable electrode or vacuum arc remelting follows, and the certificate records the route taken for the round bar.
04
Hot Reduction
Forging and rolling reduce the ingot to the ordered round bar diameter, above the recrystallisation temperature.
05
Solution Treatment
The round bar holds at 982, 1093 or 1149 °C, as the ordered Type requires.
06
Stabilising Step
Consequently, the Type 1 route adds a hold near 843 °C before the age of the round bar begins.
07
Precipitation Aging
The round bar charge ages near 704 °C, and the chart records the time at temperature for every lot.
08
Straighten and Test
Finally, we straighten the round bar, cut it to length and release it against the ordered mechanical values.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Southerly Alloy supplies Inconel X-750 round bar across the common ASTM B637 diameters and conditions. We confirm round bar size, length, straightness and finish against your order before production.
20,000+ m2
Site Area
Melting, forging, heat treatment and finishing lines for Inconel X-750 round bar sit inside one boundary.
50+
Bar Line Machines
Saws, lathes, draw benches and grinders cover the round bar sections we stock.
600 Tons
Monthly Tonnage
Custom round bar heats and stocked diameters share one campaign calendar.
30+
Technical Staff
A metallurgist reviews every X-750 round bar enquiry before the offer leaves.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Chemistry and heat treatment decide these round bar properties together, so our laboratory checks both. Therefore, the certificate reports the cycle that produced the round bar values.
01
Chemistry on the Heat
The laboratory reads titanium, aluminium and niobium in the round bar heat, then records each figure against the ASTM table.
02
Mechanics After Aging
Specifically, tensile and yield values for this round bar come from aged stock rather than solution-treated material.
03
Diameter Inspection
In addition, we check round bar size, length and straightness against standard and drawing tolerances.
04
Furnace Chart Attached
Consequently, every round bar certificate carries the solution and aging record for the same heat.
PRODUCT FORMS
Available Product Forms
Different round bar conditions suit different machining and service needs. Therefore, the list below shows the Inconel X-750 Round Bar variants we quote most often.
02
Aged Round Bar
Round bar delivered in the Type 2 or Type 3 condition for immediate service.
Request Availability →
03
Custom Round Bar
Custom Inconel X-750 round bar produced against your own specification.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Turbine hardware and high-temperature fasteners are where Inconel X-750 round bar has served longest. Meanwhile, the spring trade relies on this round bar wherever preload must survive thermal cycling.
Discuss Your Application →
01
Turbine Rotor Blades
Blades and wheels machined from X-750 round bar that hold shape under sustained heat.
02
High-Temperature Bolting
Studs and nuts cut from round bar that keep preload through thermal cycling.
03
Gas Turbine Rings
Seamless rolled rings that start life as X-750 round bar stock.
04
Heat Treatment Fixtures
Jigs and baskets made from round bar that survive repeated furnace cycles.
05
Cryogenic Fasteners
Round bar bolting for duty well below −100 °C.
06
Rocket Engine Hardware
Thrust chamber parts turned from Inconel X-750 round bar.
07
Nuclear Reactor Springs
Hold-down and spacer springs wound from round bar inside the vessel.
08
Shafts and Pins
X-750 round bar machined into rotating parts that run hot.
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 round bar, while niobium slows its coarsening.
Iron balances the matrix, and the nickel plus cobalt floor keeps this round bar austenitic. The full composition table on the Inconel X-750 material page lists every element against its ASTM limit.
Mechanical Properties
The three bar rows reproduce ASTM B637 Table 3 for UNS N07750. Section size matters for Type 2, because heavy bar 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 |
|---|---|---|---|---|---|
| Bar and rod, ASTM B637 Type 2 | Solution treated at 982 °C, aged | >=170 ksi (1170 MPa) | >=115 ksi (790 MPa) | 18% | 302-363 HB |
| Bar and rod, ASTM B637 Type 3 | Solution treated at 1093 °C, aged | >=160 ksi (1103 MPa) | >=100 ksi (689 MPa) | 20% | 267-363 HB |
| Bar and rod, 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 sections up to 63.5 mm, and heavier bar relaxes 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. 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 round bar 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 round bar ranges below follow that text rather than one house rule. For that reason, state the round bar diameter and the ordered length on the enquiry.
| Product Form | Typical Supply Range |
|---|---|
| Round bar | 6-300 mm diameter to ASTM B637 |
| Heavy round bar | Sections above 254 mm ship as forged product |
| Cold-drawn round bar | 6-100 mm diameter, closer tolerance by agreement |
| Centerless-ground round bar | 3-100 mm diameter for shafting and pins |
Cut lengths of this round bar run from 1 m up to 6 m as standard, and the AMS bar documents cap their scope at 254 mm. Therefore, heavier sections ship as forged product against the same standard.
Surface Finishes
Finish follows the operation that comes next rather than a catalogue default. Moreover, we agree the surface of this round bar with your order.
| Surface Condition | Typical Use |
|---|---|
| Hot-worked | As-rolled or as-forged surface on this round bar where machining follows. |
| Peeled | A machined skin gives this round bar uniform diameter for further turning. |
| Centerless ground | Tight diameter and straightness on this round bar used as shafting. |
The same grade also ships as hex bar, flat bar and forged bar where the drawing calls for another section.
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 round bar enquiry from the first message to the delivered lot. Therefore, state the round bar duty first, and the cycle then follows from it.
1
State the Duty
Give the service temperature, the load and the medium that the round bar part will meet.
2
Name the Form
Tell us that the order is X-750 round bar rather than rod, forged section or wire.
3
Fix the Cycle
We agree Type 1, Type 2 or Type 3 for the round bar against that duty.
4
Check the Offer
The quotation states the round bar price per kilogram, the lead time and the certificate set.
5
Confirm the Specification
Grade, round bar diameter, cycle and inspection level enter the order acknowledgement.
6
Charge and Melt
The melt shop weighs the charge and takes the round bar heat through melting and remelting.
7
Heat Treat and Test
The round bar passes the ordered solution treatment, the age and release testing.
8
Follow the Load
Finally, the desk tracks the round bar 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 Round Bar?
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 Round Bar?
Type 2 suits round bar 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 Round Bar can you supply?
Round bar runs from 6 to 300 mm diameter to ASTM B637, and cold-drawn round bar covers 6 to 100 mm at a closer tolerance.
Can X-750 round bar be machined after aging?
Yes. Aged round bar machines with sharp carbide tooling and positive rake angles. In addition, we recommend moderate feeds that cut under the hardened surface skin.
What does the Type 1 cycle add to round bar?
It adds a stabilising hold near 843 °C after the solution treatment of the round bar. Consequently, the Type 1 route protects creep life above 593 °C at some cost in tensile strength.
Can you supply Inconel X-750 Round Bar in the unaged condition?
Yes. The AMS bar documents cover solution-treated and equalized conditions for buyers who machine the round bar parts first and age them afterwards.
What is your MOQ for Inconel X-750 Round Bar?
A single piece or one coil covers most stock sizes of round bar, so a short cut is enough for a trial.
What are your trade terms for Inconel X-750 Round Bar?
We quote round bar mainly on FOB terms, and EXW or CIF follow on request.
What is the lead time for Inconel X-750 Round Bar?
Stock round bar 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 Round Bar?
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 round bar diameter, the ordered length and the service temperature. The quotation carries the round bar price, the lead time and the certificate set. Because the cycle decides the acceptance level for this round bar, name the Type or the AMS number.
A single X-750 round bar proves the grade before a plant-wide commitment.
