Machining steels

Citation

(2000), "Machining steels", Anti-Corrosion Methods and Materials, Vol. 47 No. 4. https://doi.org/10.1108/acmm.2000.12847dad.002

Machining steels

Keywords Sandvik Steel, Stainless steel, Machining

We are informed that ongoing product development of its Sanmac machining steels has enabled Sandvik Steel to announce the launch of a new generation of stainless steel bar with new grades and improved machining characteristics such as an increase in tool life and higher cutting speeds.

The new generation Sanmac (Plate 1) is thought to offer better machine utilisation through improved cutting speeds and feed rates as well as more pieces per cutting tool. Potential user benefits claimed include faster throughput, longer tool life, reduced stoppage time and therefore, reduced overhead costs.

Plate 1 The new generation Sanmac from Sandvik

It is reported that in machining tests, with Sanmac stainless steel bar grades AISI 304L/EN 1.4307 and AISI 316L/EN 1.4404, a potential 50 per cent increase in tool life can be shown or up to a 10 per cent increase in cutting speeds, a performance which Sandvik claim is well ahead of the competition.

As well as the improved properties two new grades have been confirmed as part of the standard range of bar steels available.

One new grade, designated Sanmac 4571 (AISI 316 Ti/EN 1.4571) is Titanium alloyed to improve structural stability. Machining characteristics are said to be comparable to those of Sanmac 316L.

The other, Sanmac 4435 (EN 1.4435), is a special applications machining grade based on AISI 316L but with 2.5 per cent molybdenum content.

The stock standard bar grades are AISI 304L/EN 1.4307 and AISI 316L/EN 1.4404 and the duplex stainless steel SAP 2205 (UNS S31803/EN 1.4462). Starting at 20mm diameter, all grades can be produced to a new maximum size of 500mm diameter. All Sanmac bar is manufactured in accordance with the new Euro Norm (EN) standards for bar steel and is supplied in the peel turned, or peel turned and polished condition, depending on diameter.

Key features in the supply of Sanmac bar are Sandvik Steel's production and distribution capabilities.

Production is located centrally at Sandvik's manufacturing plant in Sweden. This enables close control and monitoring of material properties from melt to melt and guarantees consistent machining quality from batch to batch.

There is a fully automated central warehouse and there are distribution centres and regional stocks, with cutting facilities, in Europe, NAFTA, Asia and the Far East.

The launch of new generation Sanmac is being supported by a new six-page brochure and a 40-page technical product handbook. Copies can be obtained from Sandvik Steel.

Details available from: Sandvik Steel, Tel : +44 (0)1922 728800; Fax : +44 (0)1922 728827; E-mail: sanmac.steel@sandvik.com, Web site: www.steel.sandvik.com