01
Hot-Rolled Plate
Thickness from 4.76 to 63.5 mm to ASTM B575, for vessel shells and heads.
Request Availability →Alloy 59 Plate and Sheet
Flat product in the low-iron nickel-chromium-molybdenum grade, for vessel shells, linings, and scrubber internals.
Thickness Split Explained
The page states where plate ends and sheet begins, because the two carry different tolerances.
Quench Log Attached
Moreover, the annealing and cooling record follows the heat number onto the certificate.
Cut to Drawing
Therefore, we plasma cut, shear, or waterjet blanks around your vessel shell before dispatch.
PRODUCT OVERVIEW
About Alloy 59 Plate and Sheet
Alloy 59 Plate and Sheet carries the UNS N06059 grade, a nickel-chromium-molybdenum alloy built on a lean matrix. Iron holds at 1.5% maximum and silicon at 0.10% maximum. Therefore, the surface rebuilds its passive film quickly, and the weld zone keeps its corrosion resistance.
The thickness you order decides which tolerance table applies, so the form pages carry the ordering detail. The flat range sits beside Alloy 59 Bar and Rod and Alloy 59 Pipe and Tube in the same melt. Corrosion data and the full alloy background sit together on the Alloy 59 hub page.
PRODUCT FEATURES
Key Features of Alloy 59 Plate and Sheet
Alloy 59 plate and sheet carries the UNS N06059 grade, a nickel-chromium-molybdenum alloy with iron at 1.5% maximum and silicon at 0.10% maximum. Flat product runs to ASTM B575, from heavy plate suitable for vessel shells down to light sheet and strip. The grade serves vessels and ducting that meet both oxidising and reducing acids, and it holds its weld zone without a post-weld anneal. Southerly Alloy works as a professional supplier and exporter of UNS N06059 flat product with full traceability.
Alloy 59
Thickness Split Stated
Plate starts at 4.76 mm, and anything thinner ships as sheet or strip under its own tolerance table.
01
Lean Iron Matrix
Moreover, iron at 1.5% maximum separates this grade from C-276, which allows up to 7%.
02
Weld Zone Stability
Consequently, low carbon and silicon let a vessel shell enter service without a post-weld anneal.
03
Both Acid Families
Chromium and molybdenum together cover streams that alternate between oxidising and reducing chemistry.
04
Chloride Margin
A pitting resistance equivalent near 75 handles scrubber liquors and chlorinated cooling water.
05
Flatness Under Control
Levelling and tension levelling hold the sheet flat for lining work and gasket joints.
06
Water-Quenched Delivery
Every lot enters the quench tank straight from the anneal, plate included.
07
Surface Options
Pickled, bright annealed, or polished faces suit vessel interiors and visible ducting.
08
WHY CHOOSE US
Why Choose Alloy 59
Thickness and finish come before price on a flat product enquiry, because both change the tolerance and the test scope. Therefore, we quote the plate and the sheet routes side by side when a vessel is involved. Meanwhile, one mill covers the whole thickness band.
01
Thickness Advice First
We confirm where plate ends and sheet begins, then quote the tolerance that fits the joint.
02
Heat-Linked Documentation
Cooling log, tensile results, and dimensional report all point to the same melt.
03
Blanks to Drawing
Plasma, shear, or waterjet cutting trims the plate to the shell development you send.
04
Protection Before Dispatch
Faces travel interleaved and edge protected under the packing terms you name.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Flat product spends longer under the roll than bar does, so the line anneals and quenches after each reduction pass. Meanwhile, levelling holds the sheet flat ahead of inspection.
01
Charge Make-Up
Weighed lots of nickel, chromium, and molybdenum reach the furnace with tramp elements controlled.
02
Melt and Refine
AOD treatment holds carbon and silicon inside the ceilings the grade allows.
03
Slab Conversion
The ingot is cut and surface conditioned into slab before the first roll pass.
04
Hot Rolling
Repeated passes between 950 and 1180 °C reduce the slab toward the ordered thickness.
05
Cold Rolling
A cold mill brings light sheet and strip to the final gauge and surface.
06
Solution Annealing
A furnace pass between 1100 and 1180 °C dissolves any phase left by the working steps.
07
Water Quenching
The plate or coil enters the tank while hot, because a slow cool costs corrosion resistance.
08
Levelling and Release
Finally, the line levels, pickles, cuts, and releases the lot against the order.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Our flat line shares one melt shop and one quench tank with the rest of the corrosion-resistant family. Therefore, a stocked thickness often ships without waiting for a furnace campaign.
20,000+ m²
Site Area
Melting, rolling, levelling, and annealing sit on one site.
35+
Rolling and Levelling Equipment
Hot mills, cold mills, and levellers form the installed base.
500 Tons
Monthly Flat Output
Plate and coil orders share one production campaign.
30+
Metallurgists on Staff
Vessel code and scrubber duty questions reach a specialist before release.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Release rests on evidence rather than assumption. Chemistry runs against the N06059 window, and mechanical results follow the thickness and condition you ordered.
01
Chemistry Against N06059
Every heat is read for iron, silicon, and molybdenum against the ASTM limits.
02
Tensile by Thickness Band
Plate and sheet samples follow the tolerance table that matches the ordered gauge.
03
Flatness and Gauge Audit
The inspection bay checks thickness, flatness, and edge condition before packing.
04
Cooling Record Attached
Therefore, the heat number on the certificate points back to the anneal and quench log.
PRODUCT FORMS
Available Product Forms
The making route decides which tolerance table governs, so cold-rolled and hot-rolled product order differently. Consequently, name the condition and the thickness band together.
02
Cold-Rolled Sheet
Product under 4.76 mm thick from 600 mm wide, for linings and ducting.
Request Availability →
03
Strip and Coil
Under 4.76 mm thick and under 600 mm wide, for continuous forming lines.
Request Availability →
04
Cut Blanks and Circles
Plasma, shear, or waterjet work to the development you send.
Request Availability →
05
Polished Sheet
A reduced-roughness face for product-contact and visible applications.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Vessels and ducting that meet more than one acid step carry the strongest case for this grade. Meanwhile, chloride-bearing scrubber liquor benefits from the pitting margin.
Discuss Your Application →
01
Reactor and Vessel Shells
Plate rolled and welded into pressure equipment for mixed acid service.
02
Scrubber Internals
Absorber walls, baffles, and ducting in flue gas desulphurisation.
03
Sulphuric Acid Tanks
Shell plate and roof sheet for storage and dilution vessels.
04
Heat-Exchanger Tube Sheets
Plate drilled and faced for tube-to-tubesheet joints.
05
Waste Incinerator Ducting
Sheet and plate exposed to acid condensate and quench spray.
06
Seawater and Brine Tanks
Lined and clad panels for chlorinated cooling circuits.
07
Pharmaceutical Vessels
Polished sheet for clean-in-place reactor interiors.
08
Nitric and Phosphoric Plant
Plate for reactors and transfer equipment in oxidising duty.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The limits below come from ASTM B575, which also governs plate, sheet, and strip. Iron and silicon are the deliberate restraints behind the grade, and aluminium is the small deliberate addition. The mill certificate governs final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 22.0–24.0% |
| Molybdenum (Mo) | 15.0–16.5% |
| Iron (Fe) | 1.5% max. |
| Aluminum (Al) | 0.10–0.40% |
| Copper (Cu) | 0.50% max. |
| Manganese (Mn) | 0.50% max. |
| Cobalt (Co) | 0.30% max. |
| Silicon (Si) | 0.10% max. |
| Phosphorus (P) | 0.015% max. |
| Sulfur (S) | 0.010% max. |
| Carbon (C) | 0.010% max. |
Mechanical Properties
The flat-product document sets one annealed condition across the thickness band, so the table below repeats a single row set. A separate European data sheet applies a higher yield floor, and that regime is not the same as the ASTM one.
| Product Form | Condition | Tensile Strength | Yield Strength, 0.2% Offset | Elongation | Hardness |
|---|---|---|---|---|---|
| Plate, sheet, and strip, ASTM B575 | Solution annealed | ≥100 ksi (690 MPa) | ≥45 ksi (310 MPa) | 45% | 100 HRB max. |
The hardness figures are informative only, and the standards bar their use as a basis for rejection. Because the grade resists aging, cold work is the only route above those floors. In addition, cold-rolled strip may be ordered in a tempered condition, so state the temper on the enquiry.
Physical Properties
Values below are typical figures for design work rather than acceptance criteria. Moreover, the alloy stays essentially non-magnetic, which suits instrument panels and clean vessels.
| Property | Value |
|---|---|
| Density | Approx. 8.6 g/cm³ |
| Melting range | Approx. 1310–1360 °C |
| Modulus of elasticity | Approx. 210 GPa |
| Thermal conductivity at 20 °C | Approx. 10.4 W/m·K |
| Electrical resistivity at 20 °C | Approx. 1.26 µΩ·m |
| Specific heat at 20 °C | Approx. 414 J/kg·K |
| Thermal expansion, 20–100 °C | Approx. 11.9 µm/m·K |
| Relative magnetic permeability at 20 °C | 1.001 max. |
| Strengthening route | Cold work only |
Standards
One ASTM document governs the flat forms, and its ASME edition takes over under pressure-code jurisdiction. Specifically, no SAE aerospace specification reaches UNS N06059. The European and Chinese designations below serve cross-reference only.
| Standard | Product or Application |
|---|---|
| ASTM B575 / ASME SB575 | Plate, sheet, and strip in the solution-annealed condition |
| ASTM B906 | Permissible variations for flat product, and the form definitions |
| ASTM B574 / ASME SB574 | Bar and rod in the same grade |
| ASTM B622 / ASME SB622 | Seamless pipe and tube in the same grade |
| ASTM B619 / ASME SB619 | Welded pipe in the same grade |
| ASTM B626 / ASME SB626 | Welded tube in the same grade |
| ASTM B564 / ASME SB564 | Forgings and forging stock in the same grade |
| ASTM B366 / ASME SB366 | Factory-made wrought fittings in the same grade |
| NACE MR0175 / ISO 15156-3 | Sour service qualification for oil and gas |
| DIN 17750 | Flat product in the European system |
| VdTÜV 505 | German pressure-equipment approval |
| UNS N06059 | Unified Numbering System designation |
| W.Nr. 2.4605 / NiCr23Mo16Al | European designation |
| GB/T 15007 NS3311 | Chinese designation |
| SAE AMS | No aerospace specification covers this grade |
Nicrofer 5923 hMo is a trademark of VDM Metals, and Inconel and Incoloy are trademarks of Special Metals Corporation. We list these names for cross-reference only, and our flat product ships to the ASTM and ASME documents above.
The product documents come from ASTM International, and their text settles any acceptance question.
Dimensions
Thickness decides whether the lot counts as plate, sheet, or strip, because ASTM B906 defines each form. Therefore, state the thickness and the width together on the enquiry.
| Product Form | Thickness | Width |
|---|---|---|
| Hot-rolled plate | 4.76–63.5 mm | Over 250 mm |
| Cold-rolled plate | 4.76–9.52 mm | Over 250 mm |
| Sheet | Under 4.76 mm | 600 mm and over |
| Strip and coil | Under 4.76 mm | Under 600 mm |
| Cut blank or circle | To drawing | To drawing |
Surface Finishes
Finish follows the next operation rather than a catalog default. In short, we agree it with the order so the face suits the fabrication you have planned.
| Surface Condition | Typical Use |
|---|---|
| Solution annealed and pickled | Standard delivery for vessel and ducting work |
| Bright annealed | Scale-free face for clean and instrument duty |
| Polished | Reduced roughness for product-contact interiors |
| Hot-rolled, descaled | Plate for parts that will be machined or rolled |
| Cold-rolled | Smooth sheet for lining and forming |
| Edge prepared | Sheared, plasma cut, or beveled edges to drawing |
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
A single coordinator tracks the order from first enquiry to final shipping paper. Nothing moves until the thickness band and the finish agree.
1
Send the Duty and Sizes
Give the medium, the temperature, the thickness, and the width.
2
Name the Finish
Tell us whether the face needs picking, bright annealing, or polishing.
3
Fix the Test Level
We settle chemistry, tensile, and any corrosion test against the specification.
4
Compare the Offer
Plate and sheet routes reach you with price, lead time, and the certificate set.
5
Approve the Specification
Grade, thickness, finish, and delivery terms go on record first.
6
Roll, Anneal, Quench
The mill rolls, anneals, and quenches the lot against your order.
7
Cut and Protect
Where the drawing calls for it, we cut blanks, then interleave and pack the faces.
8
Track to Arrival
Finally, the desk monitors the load and releases the papers before it docks.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The plate arrived flat enough to roll the shell without a second pass through our leveller.”
★★★★★
“Blanks cut to the shell development saved a week of plasma work in our own shop.”
★★★★★
“The cooling record settled our inspector's question about the weld overlay, so the vessel released on schedule.”
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 ASTM specification covers Alloy 59 plate and sheet?
ASTM B575 covers plate, sheet, and strip, with tolerances drawn from B906.
Where does plate end and sheet begin?
Plate starts at 4.76 mm thick and over 250 mm wide. Anything thinner counts as sheet or strip, and B906 sets the boundary.
What thickness can you supply?
Hot-rolled plate runs from 4.76 to 63.5 mm, and sheet and strip run below that.
How does flat product in Alloy 59 compare with C-276?
Iron holds at 1.5% maximum instead of 7%, so the pitting resistance equivalent runs higher.
Does a welded shell need a post-weld anneal?
Usually not. However, heavy sections or severe duty may call for a short solution anneal after welding.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. Every heat ships with an EN 10204 3.1 certificate, and we arrange 3.2 endorsement on request.
What is your MOQ for Alloy 59 plate and sheet?
Therefore, one plate covers most stock sizes.
What are your trade terms for Alloy 59 plate and sheet?
We quote mainly on FOB terms, and EXW or CIF follow on request.
How is the price of Alloy 59 plate calculated?
Nickel, chromium, and molybdenum set the base, and the thickness, finish, and test scope set the rest.
What is the lead time for Alloy 59 plate and sheet?
Stock plate ships in 7-15 days, and made-to-order material runs about 30 days.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Give the thickness, the width, the finish, and the duty on the enquiry. Our engineers return a quotation, a delivery date, and the certificate list. Because the test scope changes the price, tell us whether the plate goes into coded pressure equipment.
A trial quantity costs little, so one plate proves the grade before a plant-wide order.
