8.8 ELECTRO GALV STUD M24X210 WITH NUT AND WASHER
8.8 ELECTRO GALV STUD M24X210
Explaining the difference between EN8 and 8.8 steel as indicted
8.8 is ISO 898–1 grading for Bolts and screws. It indicates a bolt/screw with tensile strength of minimum 800MPa and a yield strength of 80% of 800MPa = 640MPa. Depending on thickness these are either quenched and tempered or can also be used without Q&T provided they meet the hardness and tensile requirements.
EN8 is a medium carbon steel usually supplied untreated. EN8 has good tensile strength and is often used in applications such as: shafts, gears, stressed pins, studs, bolts, keys etc.
EN8 is a very popular grade and is readily machinable in any condition. It can be further surface-hardened to produce components with enhanced wear resistance, typically in the range 50-55 HRC through induction processes. It is also available in a free-machining versions, EN8DM and EN8M (212A42)
<Elements available in EN8:
- Carbon 0.36-0.44%
- Silicon 0.10-0.40%
- Manganese 0.60-1.00%
- Sulphur 0.050 Max
- Phosphorus 0.050 Max
EN stands for European norms.