Delahaye International Trading currently sources and supplies stainless steel to the South African and African market.
We supply the material in coils, sheets, plates, bars, wire and tubing, which can be used in a variety of applications. We are able to supply any Austenitic, Ferritic and Martebsitic Type Stainless Steel:
Austenitic, or 200 and 300 series, stainless steel have an austenitic crystalline structure. Austenite steels make up over 70% of total stainless steel production. They contain a maximum of 0.15% carbon, a minimum of 16% chromium and sufficient nickel and/or manganese to retain an austenitic structure at all temperatures from the cryogenic region to the melting point of the alloy.
Ferritic stainless steels generally have better engineering properties than austenitic grades, but have reduced corrosion resistance, because of the lower chromium and nickel content. They are also usually less expensive.They contain between 10.5% and 27% chromium and very little, if any, nickel, but some types can contain lead. Most compositions include molybdenum, some aluminium or titanium. Common ferritic grades include 18Cr-2Mo, 26Cr-1Mo, 29Cr-4Mo, and 29Cr-4Mo-2Ni.
Martensitic Type 17-4PH® is a martensitic precipitation-hardening stainless steel that provides an outstanding combination of high strength, good corrosion resistance, good mechanical properties at temperatures up to 600ºF (316ºC), good toughness in both base metal and welds, and short time, low-temperature heat treatments that minimize warpage and scaling.
Duplex stainless steels have a mixed microstructure of austenite and ferrite, the aim usually being to produce a 50/50 mix, although in commercial alloys the ratio may be 40/60. Duplex stainless steels have roughly twice the strength compared to austenitic stainless steels and also improved resistance to localized corrosion, particularly pitting, crevice corrosion and stress corrosion cracking. They are characterized by high chromium (19–32%) and molybdenum (up to 5%) and lower nickel contents than austenitic stainless steels.
We supply stainless steel in any form required, from round bar to wire. Our stainless steel is sourced from reputable suppliers and comes with full test certification.
Should you require additional information on any of our stainless steel products or would like some technical assistance please do not hesitate to contact us.
We supply the material in coils, sheets, plates, bars, wire and tubing, which can be used in a variety of applications. We are able to supply any Austenitic, Ferritic and Martebsitic Type Stainless Steel:
Austenitic, or 200 and 300 series, stainless steel have an austenitic crystalline structure. Austenite steels make up over 70% of total stainless steel production. They contain a maximum of 0.15% carbon, a minimum of 16% chromium and sufficient nickel and/or manganese to retain an austenitic structure at all temperatures from the cryogenic region to the melting point of the alloy.
- 200 Series—Austenitic chromium-nickel-manganese alloys. Type 201 is hardened through cold working. Type 202 is a general purpose stainless steel. Decreased nickel content and increased manganese results in weak corrosion resistance.
- 300 Series—the most widely used austenite steel is the 304, also known as 18/8 for its composition of 18% chromium and 8% nickel. The second most common austenite steel is the 316 grade, also called marine grade stainless steel, used primarily for its increased resistance to corrosion. A typical composition of 18% chromium and 10% nickel.
Ferritic stainless steels generally have better engineering properties than austenitic grades, but have reduced corrosion resistance, because of the lower chromium and nickel content. They are also usually less expensive.They contain between 10.5% and 27% chromium and very little, if any, nickel, but some types can contain lead. Most compositions include molybdenum, some aluminium or titanium. Common ferritic grades include 18Cr-2Mo, 26Cr-1Mo, 29Cr-4Mo, and 29Cr-4Mo-2Ni.
Martensitic Type 17-4PH® is a martensitic precipitation-hardening stainless steel that provides an outstanding combination of high strength, good corrosion resistance, good mechanical properties at temperatures up to 600ºF (316ºC), good toughness in both base metal and welds, and short time, low-temperature heat treatments that minimize warpage and scaling.
Duplex stainless steels have a mixed microstructure of austenite and ferrite, the aim usually being to produce a 50/50 mix, although in commercial alloys the ratio may be 40/60. Duplex stainless steels have roughly twice the strength compared to austenitic stainless steels and also improved resistance to localized corrosion, particularly pitting, crevice corrosion and stress corrosion cracking. They are characterized by high chromium (19–32%) and molybdenum (up to 5%) and lower nickel contents than austenitic stainless steels.
We supply stainless steel in any form required, from round bar to wire. Our stainless steel is sourced from reputable suppliers and comes with full test certification.
Should you require additional information on any of our stainless steel products or would like some technical assistance please do not hesitate to contact us.