Alloy Steel Bright Bars — Manufacturer & Supplier
When the section is too thick to harden through — EN19, EN24, EN18, EN47.
Carbon steel only hardens to a limited depth. Past roughly 40 mm the centre of an EN8 shaft never reaches martensite, and the strength you designed for is not there. Chromium and molybdenum fix that: EN19 hardens through heavier sections, and EN24 with its nickel addition still hardens to centre at 150 mm while keeping impact toughness. EN47 is the chromium-vanadium spring grade. Supplied annealed for machining or quenched and tempered to a hardness band, peeled and reeled or ground.
Manufactured under the Stancor Bright Bars brand by Stancor Bright Bars.
Specifications
- gradeRange
- EN19 (4140), EN24 (4340), EN18 (5140), EN47 (6150)
- diameter
- 8 mm to 160 mm
- condition
- Annealed or quenched & tempered
- sections
- Round, square, hexagon & flat
- lengths
- 3 m, 4 m, 6 m and cut to length
- tolerance
- ISO h8, h9, h10, h11 to EN 10278
- straightness
- 0.5 mm/m (1 mm/m on cold drawn above 80 mm)
- certification
- EN 10204 3.1 (3.2 on request)
Alloy Steel Bright Bars Applications
- Drive & transmission shafts
- Hydraulic rams
- High tensile bolting
- Gears & pinions
- Mandrels & rolls
Applicable Standards & Specifications
- EN 10277-5
- EN 10083-3
- EN 10278
- BS 970 Part 3
- ASTM A322