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The information above is based on our current knowledge and is given in good faith; however the company will accept no liability in respect of any third party reliance thereon.

Tolerances on diameter, for general purposes.

Round Bar:
Between 10mm and 15mm= +/- 0.4mm
Between 16mm and 25mm= +/- 0.5mm
Between 26mm and 35mm= +/- 0.6mm
Between 36mm and 50mm= +/- 0.8mm
Between 52mm and 80mm= +/- 1.0mm
Between 85mm and 100mm= +/- 1.3mm
Between 105mm and 120mm= +/- 1.5mm
Between 125mm and 160mm= +/- 2.0mm
Between 165mm and 200mm= +/- 2.5mm
220mm= +/- 3.0mm
250mm= +/- 4.0mm

Tolerances on diameter, for precision purposes.

Round bar:
Between 10mm and 12mm= +/- 0.15mm
Between 13mm and 22mm= +/- 0.20mm
Between 24mm and 30mm= +/- 0.25mm
Between 32mm and 40mm= +/- 0.30mm
Between 42mm and 52mm= +/- 0.40mm
Between 55mm and 75mm= +/- 0.50mm

Grade 321 is the basic austenitic 18/8 steel. It combines high strength along with resistance to scaling and aqueous corrosion. It has excellent weldability by all standard fusion methods and oxidation resistance in intermittent service up to 900 degrees centigrade.

A limitation of grade 321 is that titanium does not transfer well across a high tensile arc, so it is not recommended as a welding consumable.