01
Solution-Treated Square Bar
Soft square stock for brackets that the buyer machines first and ages afterwards.
Request Availability →Inconel X-750 Square Bar
Precipitation-hardened square stock in three cycles for frames, brackets and hot support plates.
Three Strengths, One Section
A single Inconel X-750 square bar reaches 965, 1103 or 1170 MPa minimum tensile once the mill fixes the cycle.
Across-Flats Stock
We hold X-750 square bar from 8 to 80 mm across flats for frames and brackets.
Cycle Record Shipped
Each square bar lot travels with the solution and aging record for its own heat.
PRODUCT OVERVIEW
About Inconel X-750 Square Bar
Inconel X-750 square bar ships in UNS N07750, a precipitation-hardening nickel-chromium-iron alloy. Titanium and aluminium build the gamma-prime precipitate inside this square stock. Niobium then slows its coarsening, so the square bar holds strength to 704 °C.
We supply Inconel X-750 square bar to ASTM B637 in the Type 1, Type 2 and Type 3 conditions. Consequently, the ordered cycle decides the strength level of the square bar, and we record it on the purchase order before production.
Meanwhile, the Inconel X-750 Bar and Rod hub also lists this square bar beside the other forms. The European call-out NiCr15Fe7TiAl maps to the same UNS N07750 material as this square bar.
PRODUCT FEATURES
Key Features of Inconel X-750 Square Bar
Inconel X-750 square bar is 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 square bar to ASTM B637 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 Bar
Type 2, Type 3 and Type 1 deliver 1170, 1103 and 965 MPa minimum tensile for Inconel X-750 square bar in that order.
01
Square Stock for Frames
Specifically, the across-flats section of this square bar feeds welded brackets and support frames.
02
Creep Life Above 593 °C
Moreover, the stabilised Type 1 route guards the creep strength of square bar where the part runs hot for years.
03
No Molybdenum Listed
Titanium and aluminium carry the strengthening, so the certificate for this square bar shows no molybdenum.
04
Aging Record Shipped
Each square bar lot travels with the furnace chart for its own solution treatment and age.
05
Machining in the Aged State
The hardened square bar matrix machines with carbide tooling rather than heavy cuts.
06
Across-Flats Held to Drawing
We hold the square bar across-flats size and length against the tolerance on your drawing.
07
Heavy Sections Forged
In fact, X-750 square sections above the bar scope ship as forged product under the same standard.
08
WHY CHOOSE US
Why Choose Inconel X-750
Sourcing Inconel X-750 square bar depends on fixing the cycle before anyone cuts the bar. Where the bracket sees service above 593 °C, the stabilised route protects creep life.
01
Cycle Fixed at Order
Grade, across-flats size and cycle enter the purchase order, because one X-750 square bar reaches three strength levels.
02
Certificate Names the Treatment
Consequently, each certificate records the solution and aging that the mill applied to that square bar heat.
03
Stock and Cut Lengths
In addition, one enquiry covers standard square bar sizes and custom-cut lengths of X-750 stock.
04
Export Papers in One Set
Quotations for Inconel X-750 square bar include the packing list, mill certificate and export documents.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
One melt feeds every square bar section, and the ordered cycle then sets the final properties. Because titanium and aluminium oxidise easily, melting control for X-750 square bar matters as much as the rolling schedule.
01
Charge Selection
Weighed nickel, chromium, iron, titanium and aluminium enter the melt that will become this square bar order.
02
Melt and Refine
Vacuum induction melting holds titanium and aluminium inside a narrow window on every square bar heat.
03
Remelt for Cleanliness
Consumable electrode or vacuum arc remelting follows, and the certificate records the route taken for the square bar.
04
Hot Reduction
Forging and rolling reduce the ingot to the ordered square section, above the recrystallisation temperature, before the square bar is cut.
05
Solution Treatment
The square 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 square bar begins.
07
Precipitation Aging
The square 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 square 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 square bar across the common ASTM B637 across-flats sizes and conditions. We confirm square bar size, length and finish against your order before production.
20,000+ m2
Site Area
Melting, forging, heat treatment and finishing for Inconel X-750 square bar sit inside one boundary.
50+
Bar Line Machines
Saws, presses, draw benches and grinders cover the square bar sections we stock.
600 Tons
Monthly Tonnage
Custom square bar heats and stocked across-flats sizes share one campaign calendar.
30+
Technical Staff
A metallurgist reviews every X-750 square bar enquiry before the offer leaves.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Chemistry and heat treatment decide these square bar properties together, so our laboratory checks both. Therefore, the certificate reports the cycle that produced the square bar values.
01
Chemistry on the Heat
The laboratory reads titanium, aluminium and niobium in the square bar heat, then records each figure against the ASTM table.
02
Mechanics After Aging
Specifically, tensile and yield values for this square bar come from aged stock rather than solution-treated material.
03
Section Inspection
In addition, we check square bar across-flats size, length and straightness against standard and drawing tolerances.
04
Furnace Chart Attached
Consequently, every square bar certificate carries the solution and aging record for the same heat.
PRODUCT FORMS
Available Product Forms
Different square bar conditions suit different structural and support needs. Therefore, the list below shows the Inconel X-750 Square Bar variants we quote most often.
02
Aged Square Bar
Square bar delivered in the Type 2 or Type 3 condition for immediate service.
Request Availability →
03
Custom Square Bar
Custom Inconel X-750 square bar produced against your own specification.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Furnace structures and hot support parts are where Inconel X-750 square bar has served longest. Meanwhile, the fabrication trade relies on this square stock wherever load must survive thermal cycling.
Discuss Your Application →
01
Welded Brackets
Bracket frames built from X-750 square bar that hold their shape in service.
02
High-Temperature Frames
Square bar members that carry structural load through thermal cycling.
03
Support Plates
Base plates machined from square bar for parts that run hot.
04
Heat Treatment Fixtures
Jigs made from square bar that survive repeated furnace cycles.
05
Cryogenic Frames
Square bar members for duty well below −100 °C.
06
Reformer Internals
Square bar built into heater and catalyst hardware.
07
Turbine Casing Parts
Square bar machined into casing hardware that sees sustained heat.
08
Rocket Engine Hardware
Small hot-gas components cut from Inconel X-750 square bar.
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 square bar, while niobium slows its coarsening.
Iron balances the matrix, and the nickel plus cobalt floor keeps this square 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 square 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 square bar ranges below follow that text rather than one house rule. For that reason, state the square bar across-flats size and the ordered length on the enquiry.
| Product Form | Typical Supply Range |
|---|---|
| Square bar | 8-80 mm across flats to ASTM B637 |
| Cold-drawn square bar | 8-60 mm across flats, closer tolerance by agreement |
| Heavy square bar | Sections above 80 mm across flats ship as forged product |
| Bright square bar | 8-50 mm across flats with a drawn surface |
Cut lengths of this square 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 square bar with your order.
| Surface Condition | Typical Use |
|---|---|
| Hot-worked | As-rolled or as-forged surface on this square bar where machining follows. |
| Cold drawn | Close size control and a brighter surface on this square bar. |
| Peeled | A machined skin gives this square bar uniform diameter for further turning. |
Sister forms from the same heat cover the neighbouring sections, including flat bar, hex bar and forged bar.
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 square bar enquiry from the first message to the delivered lot. Therefore, state the square 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 square bar part will meet.
2
Name the Form
Tell us that the order is X-750 square bar rather than round bar, forged section or wire.
3
Fix the Cycle
We agree Type 1, Type 2 or Type 3 for the square bar against that duty.
4
Check the Offer
The quotation states the square bar price per kilogram, the lead time and the certificate set.
5
Confirm the Specification
Grade, square bar across-flats size, cycle and inspection level enter the order acknowledgement.
6
Charge and Melt
The melt shop weighs the charge and takes the square bar heat through melting and remelting.
7
Heat Treat and Test
The square bar passes the ordered solution treatment, the age and release testing.
8
Follow the Load
Finally, the desk tracks the square 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 Square 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 Square Bar?
Type 2 suits square 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 Square Bar can you supply?
Square bar covers 8 to 80 mm across flats to ASTM B637, and cold-drawn square bar runs 8 to 60 mm across flats at a closer tolerance.
Can square bar be welded into a frame?
Yes. We weld X-750 square bar in the solution-treated condition with matching ERNiCrFe filler, then age the finished frame.
What does the Type 1 cycle add to square bar?
It adds a stabilising hold near 843 °C after the solution treatment of the square bar. Consequently, the Type 1 route protects creep life above 593 °C at some cost in tensile strength.
Can you supply Inconel X-750 Square Bar in the unaged condition?
Yes. The AMS bar documents cover solution-treated and equalized conditions for buyers who machine the square bar parts first and age them afterwards.
What is your MOQ for Inconel X-750 Square Bar?
A single piece or one coil covers most stock sizes of square bar, so a short cut is enough for a trial.
What are your trade terms for Inconel X-750 Square Bar?
We quote square bar mainly on FOB terms, and EXW or CIF follow on request.
What is the lead time for Inconel X-750 Square Bar?
Stock square 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 Square 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 square bar across-flats size, the ordered length and the service temperature. The quotation carries the square bar price, the lead time and the certificate set. Because the cycle decides the acceptance level for this square bar, name the Type or the AMS number.
A single X-750 square bar proves the grade before a plant-wide commitment.
