Alloy 20 Round Bar Supplier | Alloy 20 ASTM B473, DIN 2.4660 Round Bars, Rods & Wires
Alloy 20 Bar Stock, ASTM B473 Alloy 20 Round Bar, Alloy 20 UNS N08020 Round Bar, Ros & Wires Alloy 20
Bars & Wires Supplier
Alloy 20 Round Bar Supplier, Alloy 20 ASTM B 473 DIN 2.4660 Round Bar, Rods & Wires Supplier
Nandishwar Steel has supplied stainless, ferrous and non-ferrous metals to manufacturers across India
for more than two decades, and our Mumbai stockyard serves refining, pharmaceutical, chemical and power
industry buyers who need certified alloy stock on short notice. Alloy 20 round bar moves through our
yard regularly, in standard and custom sizes, for clients machining pumps, valves and fasteners for acid
service. Every batch ships with mill test certificates, and our sourcing reach across Indian and
overseas mills keeps even uncommon diameters in supply.
Why Source Alloy 20 Round Bars From Nandishwar Steel
Two decades of operation in the Mumbai metal market have built supplier relationships spanning domestic
and export mills, which keeps lead times short even on less common alloy specifications. We hold stock
for refining and petrochemical units, chemical and pharmaceutical companies, pulp and paper mills, sugar
factories, oil refineries, and power stations, supplying each order with the same attention regardless
of quantity. Test certificates accompany every batch, and we work with buyers who need third-party
inspection arranged before dispatch. Our quality management system documents every batch, and Modvatable
invoicing lets registered buyers recover excise duty paid on the material.
Request a quote for your Alloy 20 round bar size and length requirement, and our team will confirm stock
availability and pricing.
What Is Alloy 20 Round Bar?
Alloy 20 round bar is a wrought form of UNS N08020, an austenitic nickel-iron-chromium alloy developed
specifically to resist sulfuric acid attack. Nickel content between 32.5 and 35 percent gives the bar
its resistance to chloride ion stress cracking, while chromium at 19 to 21 percent builds general
corrosion resistance into the matrix. Molybdenum and copper additions, absent from standard 304 and 316
stainless, target sulfuric acid service directly, letting the bar hold up in concentrations and
temperatures that pit or crack ordinary stainless within weeks.
What are the dimensions of Alloy 20 round bars?
Alloy 20 round bar dimensions can vary depending on the specific needs and intended purpose. Alloy 20
round bars typically come in various diameters, ranging from 1/4 inch to 24 inches or more. Round bars
of alloy 20 can be any length, with the norm falling between 10 and 12 feet. On the other hand,
customized sizes are also offered based on the customer's particular needs. Alloy 20 round bars'
dimensions could be subject to tolerances and variations depending on manufacturing standards and other
factors.
What are the ASTM standards for Alloy 20 round bars?
The ASTM B473 and B462 standards apply to round bars of alloy 20. The standard specification for UNS
N08020 and N08026 alloy round bars, often known as Alloy 20, is ASTM B473. This specification includes
Alloy 20 round bars in various sizes and diameters, both hot-finished and cold-finished. The standard
specification for forged or rolled UNS N08020, N08024, and N08026 alloy parts, including round bars, is
ASTM B462. To guarantee the quality and dependability of Alloy 20 round bars for various applications,
these standards set minimum requirements for material composition, mechanical qualities, testing, and
other aspects.
Key Properties and Features of Alloy 20 Round Bars
Bars in this alloy resist stress corrosion cracking, crevice corrosion and pitting in chloride-bearing
acid environments where 304 or 316 stainless fails within months. Machinability holds up well against
that corrosion resistance: standard tooling at moderate cutting speeds machines the bar cleanly, keeping
fabrication costs down on pump shafts, agitator parts and fastener blanks. Weldability matches the
machining performance, since matching filler metal joins the bar without post-weld heat treatment on
most sections under 1/2 inch thick. Minimum tensile strength reaches 80,000 PSI in annealed condition,
with yield strength at 35,000 PSI minimum and elongation of 30 percent, figures set under ASTM B473.
Industrial Applications of Alloy 20 Round Bars
Sulfuric acid plants specify Alloy 20 round bars for pump shafts, valve stems and fastener stock that
stays in continuous acid contact. Pharmaceutical manufacturers use the same bar for equipment exposed to
cleaning acids and process solvents, while gasoline storage systems, explosives plants and synthetic
fibre production lines rely on it for components that combine corrosion resistance with mechanical
strength. Food processing equipment and plastics manufacturing round out the demand, drawing on the
alloy's resistance to a wide span of acids beyond sulfuric alone.
Specifications of Alloy 20 Round Bars:
Our Alloy 20 round bar stock meets the following technical parameters:
Standards : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 15NB to 150NB In
Length : 4 mm To 350 mm DIA
Specifications : ASTM B473 / SB473
Form : Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot,
Forging Etc.
Finish : Bright, Polish, Black
Alloy 20 Round Bar Equivalent Grades
Buyers sourcing material against international project specifications can cross-reference Alloy 20
against the following designations:
STANDARD
UNS
EN
WERKSTOFF NR.
AFNOR
Alloy 20
N08020
NiCr20CuMo
2.4660
Z2NCUD31-20AZ
Alloy 20 Round Bar Dimensions
Stock dimensions for Alloy 20 round bar at Nandishwar Steel break down as follows:
SPECIFICATION
RANGE
DIAMETER
1/4 INCH TO 24 INCHES
STANDARD LENGTH
10 TO 12 FEET
CUSTOM LENGTH
CUT TO PROJECT DRAWING ON REQUEST
FINISH, UNDER 2 INCH DIA
COLD-FINISHED
FINISH, OVER 2 INCH DIA
HOT-FINISHED, MACHINED TO TOLERANCE
TOLERANCE
PER STANDARD SPECIFIED AT ORDER
ASTM Standards Governing Alloy 20 Round Bars
ASTM B473 and ASTM B462 cover round bars in this alloy. B473 sets the specification for UNS N08020 and
N08026 bars in hot-finished and cold-finished condition, covering chemical composition, mechanical
properties and dimensional tolerances. B462 applies to forged and rolled fittings in UNS N08020, N08024
and N08026, including round bar stock intended for further forging. Both standards exist to keep
material composition and mechanical performance consistent across mills and batches, which matters most
when a single project sources bars from more than one supplier and needs every batch to test within the
same chemistry window.
Other Alloy 20 Products We Supply
Beyond round bars in standard sizes, our stock range includes:
Alloy 20 Round Bars
Alloy 20 ASTM B 473 Rods
Alloy 20 ASME B 473Wires
Alloy 20 UNS N08020 Rods
Alloy 20 DIN 2.4660 Round Bars
Frequently Asked Questions
Pharmaceutical manufacturing, sulfuric acid processing, fertiliser plants, plastics and
synthetic fibre production, and explosives manufacturing use Alloy 20 round bars for fasteners,
shafts and pump components exposed to acids and chlorides.
ASTM B473 covers hot-finished and cold-finished bars in UNS N08020 and N08026, while ASTM B462
applies to forged and rolled bar stock in N08020, N08024 and N08026.
The alloy contains 32.5 to 35 percent nickel, 19 to 21 percent chromium, 2 to 3 percent
molybdenum, 3 to 4 percent copper, and a balance of iron, with carbon capped at 0.07 percent
maximum.
Bars deliver a minimum tensile strength of 80,000 PSI, a minimum yield strength of 35,000 PSI,
and elongation of at least 30 percent, figures specified under ASTM B473 for annealed condition
bar.
Diameters range from 1/4 inch to 24 inches, supplied in standard lengths of 10 to 12 feet or
custom-cut lengths against project drawings.
Bars from our stock comply with ASTM B473, ASTM B462, and cross-reference against EN 2.4660, UNS
N08020, and AFNOR Z2NCUD31-20AZ designations for international procurement.
