Starc Metals stands out as a trusted manufacturer and supplier of ST 52.3 Round Bars right here in Canberra, Australia. We take pride in offering top-notch carbon steel products that are built for strength, toughness, and excellent machinability. Our ST 52.3 round bars are celebrated for their remarkable mechanical properties, impressive weldability, and strong resistance to impact and fatigue. Crafted in line with international standards, these bars are perfect for high-stress engineering applications. At Starc Metals, we guarantee precise dimensional accuracy, a smooth surface finish, and consistent performance, making our round bars the go-to choice for sectors like construction, automotive, and mechanical engineering.
When it comes to composition, ST 52.3 Round Bars typically contain 0.22% carbon, 1.6% manganese, 0.55% silicon, 0.025% phosphorus, and 0.025% sulfur. This careful chemical balance results in an outstanding mix of strength and ductility. The bars boast a tensile strength ranging from 490 to 630 MPa, a yield strength of about 355 MPa, and an elongation of around 21%, depending on their size and heat treatment. With a high strength-to-weight ratio, excellent weldability, and superb machinability, ST 52.3 delivers exceptional performance for both static and dynamic load-bearing applications.
Alloy 20 Round Bar Specification : ASTM B473 , ASME SB473
Dimension Standard : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 14mm-300mm
Thickness : 50 mm to 6000 mm Long
Length : 1 To 6 Meters, Custom Cut Length
Form : Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc.
| Carbon Steel | C | Si | Mn | P | S | Cu | N |
| ST 52 | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | 0,55 | 0,012 |
| The final delivery condition | Cold drawn(Mandatory) BK1） | Cold drawn(Soft) BKW1） | Cold Drawn and Stress Release (BKS) | Anneal (GBK)1） | Normalizing (NBK)1） | |||||||||
| Kinds of Steel | Tensile | Elongation | Tensile | Elongation | Tensile | Yield point | Elongation | Tensile | Elongation | Tensile | Yield point | Elongation | ||
| Steel grade | Material number | No less than | ||||||||||||
| Rm | A5 | Rm | A5 | Rm | ReH | A5 | Rm | A5 | Rm | ReH2) | A5 | |||
| N/mm2 | % | N/mm2 | % | N/mm2 | N/mm2 | % | N/mm2 | % | N/mm2 | N/mm2 | % | |||
| St52 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490~630 | 355 | 22 | |
|
DIN |
EN |
JIS |
ISO |
ASTM |
GB |
|
|
ST52-3 |
S355JR |
SM490A |
FE510B |
E36-2 |
A572Gr.50 |
Q345B |
Considerations for selecting ST 52.3 Round Bar include its mechanical properties, tensile strength, corrosion resistance, application requirements, and cost-effectiveness.
ST 52.3 Round Bar generally does not require corrosion protection coatings for indoor applications but may need coatings for outdoor or harsh environments to enhance its durability.
ST 52.3 Round Bar can be used for underground applications, but it may require additional corrosion protection to ensure longevity in moist or aggressive environments.
You’ll find ST 52.3 Round Bars commonly used in the production of machine parts, shafts, axles, and connecting rods, thanks to their impressive mechanical strength and toughness. They also play a vital role in construction, automotive frames, hydraulic systems, and components for heavy equipment. The material’s outstanding weldability and formability make it ideal for structural and mechanical applications that demand precision and durability. Its ability to handle varying loads and stresses efficiently makes ST 52.3 a top choice for modern engineering and industrial projects.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Starc Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Canberra, Australia
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