01
Solution-Treated Hex Bar
Soft hex stock for fasteners that the buyer machines first and ages afterwards.
Request Availability →Inconel X-750 Hex Bar
Precipitation-hardened hexagon stock in three cycles for nuts, bolts and valve bodies that run hot.
Three Strengths, One Section
A single Inconel X-750 hex bar reaches 965, 1103 or 1170 MPa minimum tensile once the mill fixes the cycle.
Across-Flats Stock
We hold X-750 hex bar from 8 to 80 mm across flats for nuts, bolts and valve bodies.
Cycle Record Shipped
Each hex bar lot travels with the solution and aging record for its own heat.
PRODUCT OVERVIEW
About Inconel X-750 Hex Bar
Inconel X-750 hex bar ships in UNS N07750, a precipitation-hardening nickel-chromium-iron alloy. Titanium and aluminium build the gamma-prime precipitate inside this hexagon stock. Niobium then slows its coarsening, so the hex bar holds strength to 704 °C.
We supply Inconel X-750 hex bar to ASTM B637 in the Type 1, Type 2 and Type 3 conditions. Consequently, the ordered cycle decides the strength level of the hex bar, and we record it on the purchase order before production.
Meanwhile, the Inconel X-750 Bar and Rod hub also lists this hex bar beside the other forms. The European call-out NiCr15Fe7TiAl maps to the same UNS N07750 material as this hex bar.
PRODUCT FEATURES
Key Features of Inconel X-750 Hex Bar
Inconel X-750 hex 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 hex 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 hex bar in that order.
01
Hex Stock for Nuts
Specifically, the across-flats section of this hex bar feeds hex nut and bolt production directly.
02
Creep Life Above 593 °C
Moreover, the stabilised Type 1 route guards the creep strength of hex bar where the fastener runs hot for years.
03
No Molybdenum Listed
Titanium and aluminium carry the strengthening, so the certificate for this hex bar shows no molybdenum.
04
Aging Record Shipped
Each hex bar lot travels with the furnace chart for its own solution treatment and age.
05
Machining in the Aged State
The hardened hex bar matrix machines with carbide tooling rather than heavy cuts.
06
Across-Flats Held to Drawing
We hold the hex bar across-flats size and length against the tolerance on your drawing.
07
Heavy Sections Forged
In fact, X-750 hexagons 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 hex bar depends on fixing the cycle before anyone cuts the bar. Where the nut 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 hex bar reaches three strength levels.
02
Certificate Names the Treatment
Consequently, each certificate records the solution and aging that the mill applied to that hex bar heat.
03
Stock and Cut Lengths
In addition, one enquiry covers standard hex bar sizes and custom-cut lengths of X-750 stock.
04
Export Papers in One Set
Quotations for Inconel X-750 hex bar include the packing list, mill certificate and export documents.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
One melt feeds every hex bar section, and the ordered cycle then sets the final properties. Because titanium and aluminium oxidise easily, melting control for X-750 hex 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 hex bar order.
02
Melt and Refine
Vacuum induction melting holds titanium and aluminium inside a narrow window on every hex bar heat.
03
Remelt for Cleanliness
Consumable electrode or vacuum arc remelting follows, and the certificate records the route taken for the hex bar.
04
Hot Reduction
Forging and rolling reduce the ingot to the ordered hexagon, above the recrystallisation temperature, before the hex bar is cut.
05
Solution Treatment
The hex 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 hex bar begins.
07
Precipitation Aging
The hex 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 hex 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 hex bar across the common ASTM B637 across-flats sizes and conditions. We confirm hex 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 hex bar sit inside one boundary.
50+
Bar Line Machines
Saws, draw benches, presses and grinders cover the hex bar sections we stock.
600 Tons
Monthly Tonnage
Custom hex bar heats and stocked across-flats sizes share one campaign calendar.
30+
Technical Staff
A metallurgist reviews every X-750 hex bar enquiry before the offer leaves.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Chemistry and heat treatment decide these hex bar properties together, so our laboratory checks both. Therefore, the certificate reports the cycle that produced the hex bar values.
01
Chemistry on the Heat
The laboratory reads titanium, aluminium and niobium in the hex bar heat, then records each figure against the ASTM table.
02
Mechanics After Aging
Specifically, tensile and yield values for this hex bar come from aged stock rather than solution-treated material.
03
Across-Flats Inspection
In addition, we check hex bar across-flats size, length and straightness against standard and drawing tolerances.
04
Furnace Chart Attached
Consequently, every hex bar certificate carries the solution and aging record for the same heat.
PRODUCT FORMS
Available Product Forms
Different hex bar conditions suit different fastener and fitting needs. Therefore, the list below shows the Inconel X-750 Hex Bar variants we quote most often.
02
Aged Hex Bar
Hex bar delivered in the Type 2 or Type 3 condition for immediate service.
Request Availability →
03
Custom Hex Bar
Custom Inconel X-750 hex bar produced against your own specification.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Turbine fasteners and hot valve hardware are where Inconel X-750 hex bar has served longest. Meanwhile, the fitting trade relies on this hexagon stock wherever preload must survive thermal cycling.
Discuss Your Application →
01
Hex Nuts and Bolts
Nuts and bolts turned from X-750 hex bar that keep preload through thermal cycling.
02
Valve Bodies
Hex bar stock machined into valve components that run hot.
03
Flange Studs
Studs cut from hex bar for high-temperature flange joints.
04
Heat Treatment Fixtures
Spacers made from hex bar that survive repeated furnace cycles.
05
Cryogenic Fasteners
Hex bar bolting for duty well below −100 °C.
06
Rocket Engine Hardware
Small hot-gas components turned from Inconel X-750 hex bar.
07
Nuclear Reactor Hardware
Hold-down nuts machined from hex bar inside the vessel.
08
Turbine Casing Bolting
Hex bar fasteners that hold casing covers under sustained heat.
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 hex bar, while niobium slows its coarsening.
Iron balances the matrix, and the nickel plus cobalt floor keeps this hex 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 hex 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 hex bar ranges below follow that text rather than one house rule. For that reason, state the hex bar across-flats size and the ordered length on the enquiry.
| Product Form | Typical Supply Range |
|---|---|
| Hex bar | 8-80 mm across flats to ASTM B637 |
| Cold-drawn hex bar | 8-60 mm across flats, closer tolerance by agreement |
| Heavy hex bar | Sections above 80 mm across flats ship as forged product |
| Bright hex bar | 8-50 mm across flats with a drawn surface |
Cut lengths of this hex 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 hex bar with your order.
| Surface Condition | Typical Use |
|---|---|
| Hot-worked | As-rolled or as-forged surface on this hex bar where machining follows. |
| Cold drawn | Close size control and a brighter surface on this hex bar. |
| Peeled | A machined skin gives this hex bar uniform diameter for further turning. |
Where the profile changes, the same heat also leaves the mill as round bar, square bar and cold drawn 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 hex bar enquiry from the first message to the delivered lot. Therefore, state the hex 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 hex bar fastener will meet.
2
Name the Form
Tell us that the order is X-750 hex bar rather than round bar, forged section or wire.
3
Fix the Cycle
We agree Type 1, Type 2 or Type 3 for the hex bar against that duty.
4
Check the Offer
The quotation states the hex bar price per kilogram, the lead time and the certificate set.
5
Confirm the Specification
Grade, hex 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 hex bar heat through melting and remelting.
7
Heat Treat and Test
The hex bar passes the ordered solution treatment, the age and release testing.
8
Follow the Load
Finally, the desk tracks the hex 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 Hex 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 Hex Bar?
Type 2 suits hex 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 Hex Bar can you supply?
Hex bar covers 8 to 80 mm across flats to ASTM B637, and cold-drawn hex bar runs 8 to 60 mm across flats at a closer tolerance.
Which hex bar size suits a 1 inch nut?
A 1 inch heavy hex nut needs stock near 41 mm across flats. In addition, we machine the across-flats size to your nut drawing on request.
What does the Type 1 cycle add to hex bar?
It adds a stabilising hold near 843 °C after the solution treatment of the hex bar. Consequently, the Type 1 route protects creep life above 593 °C at some cost in tensile strength.
Can you supply Inconel X-750 Hex Bar in the unaged condition?
Yes. The AMS bar documents cover solution-treated and equalized conditions for buyers who machine the hex bar parts first and age them afterwards.
What is your MOQ for Inconel X-750 Hex Bar?
A single piece or one coil covers most stock sizes of hex bar, so a short cut is enough for a trial.
What are your trade terms for Inconel X-750 Hex Bar?
We quote hex bar mainly on FOB terms, and EXW or CIF follow on request.
What is the lead time for Inconel X-750 Hex Bar?
Stock hex 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 Hex 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 hex bar across-flats size, the ordered length and the service temperature. The quotation carries the hex bar price, the lead time and the certificate set. Because the cycle decides the acceptance level for this hex bar, name the Type or the AMS number.
A single X-750 hex bar proves the grade before a plant-wide commitment.
