From the heart of Hamilton’s industrial landscape, Latham Steel has established itself as a trusted name for quality materials. We are proud suppliers of ASTM A709-50W Corten steel, a material celebrated for its strength and distinctive character. This high-strength, low-alloy steel is perfect for New Zealand’s demanding environments, offering exceptional durability combined with a unique, self-protecting rust patina that actually enhances its longevity, making it a smart, low-maintenance choice for a wide range of structural and architectural projects.
The specific composition of ASTM A709-50W includes elements like copper, chromium, and nickel, which work in concert to create its famous weathering properties. Mechanically, it delivers a minimum yield strength of 50,000 psi, providing a robust framework that stands up to significant stress. This impressive strength-to-weight ratio means structures can be both lighter and stronger, while the steel’s enhanced atmospheric corrosion resistance is several times greater than that of ordinary carbon steel, ensuring resilience for decades.
STANDARD:Â ASTM A709
THICKNESS:Â 6-100mm
WIDTH:Â 900-4800mm
LENGTH:Â 3000-12000mm
GRADES:50W,50WT,50WF
SERVICES: Welding, Forming, Thermal Cutting
| TYPE | THICKNESS (in) | MN (wt %) | C (MAXÂ wt %) | S (MAXÂ wt %) | NI (MAXÂ wt %) | P (MAXÂ wt %) | V (wt %) | SI (wt %) | CR (wt %) | CU (wt %) |
|---|---|---|---|---|---|---|---|---|---|---|
| B | 2.00 – 3.00 | 0.75 – 1.35 | 0.20 | 0.030 | 0.50 | 0.030 | 0.01 – 0.10 | 0.15 – 0.50 | 0.40 – 0.70 | 0.20 – 0.40 |
| A | 0.1875 – 2.00 | 0.80 – 1.25 | 0.19 | 0.030 | 0.40 | 0.030 | 0.02 – 0.10 | 0.30 – 0.65 | 0.40 – 0.65 | 0.25 – 0.40 |
| GRADE | THICKNESS (in) | ELONGATION IN 8″ 2) (MIN %) | TENSILE STRENGTH (MIN ksi) | YIELD STRENGTH 1) (MIN ksi) | ELONGATION IN 2″ 2) (MIN %) |
|---|---|---|---|---|---|
| 50WT | 0.1875 – 3.00 | 18 | 70 | 50 | 21 |
| 50W | 0.1875 – 3.00 | 18 | 70 | 50 | 21 |
| 50WF | 0.1875 – 2.50 | 18 | 70 | 50 | 21 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Latham Steel is one of the most prominent manufacturers and suppliers of superior quality ASTM A709-50W Corten Steel Sheet and Plate in Hamilton, New Zealand. As experts in steel solutions, we supply a complete spectrum of products like Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our product range comprises Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Known for our reliable delivery and first-rate customer service, we are committed to supplying high-quality steel materials that guarantee durability and excellent performance in numerous industrial applications.Â
| GRADE | THICKNESS (in) | MIN LONGITUDINAL INDIVIDUAL VALUEÂ 1) (ft-lbs) | MIN LONGITUDINAL AVERAGE ENERGYÂ 1) (ft-lbs) | ZONE 2 TEST TEMP | ZONE 1 TEST TEMP | ZONE 3 TEST TEMP |
|---|---|---|---|---|---|---|
| 50WT | 2.01 – 3.00 | — | 20 | 40 oF | 70 oF | 10 oF |
| 50WT | 0.1875 – 2.00 | — | 15 | 40 oF | 70 oF | 10 oF |
| 50WF | 0.1875 – 2.00 | 20 | 25 | 40 oF | 70 oF | 10 oF |
| 50WF | 2.01 – 2.50 | 24 | 30 |
| GRADE | WIDTH (in) | THICKNESS (in) | LENGTH (in) |
|---|---|---|---|
| 50WT | 72 – 120 | 0.1875 – 3.00 | 240 – 1200 |
| 50W | 72 – 120 | 0.1875 – 3.00 | 240 – 1200 |
| 50WF | 72 – 120 | 0.1875 – 2.50 | 240 – 1200 |
The beauty of this steel lies in its versatility. It is the preferred material for iconic bridges and major structural frameworks, where its high strength is paramount. Beyond heavy engineering, its evolving rustic appearance has made it a favourite for architectural cladding, sculptural installations, and landscape features across New Zealand. From durable agricultural buildings to striking modern facades, ASTM A709-50W Corten offers a blend of raw industrial strength and aesthetic appeal that develops a unique character over time, blending seamlessly with both urban and natural settings.
Latham Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Hamilton, New Zealand.
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