Engineering Steels
EN9Supplier in Johannesburg. Cut to size, delivered nationwide.
EN9 is a medium-carbon steel with around 0.55% carbon. It is stronger and harder-wearing than mild steel and responds well to flame and induction hardening, which makes it a common choice for sprockets, gears and parts that rub.
At a glance
Reference values. We confirm the exact grade and condition on every quote.
- Also known as
- 070M55, similar to C55 (1.0535) and AISI 1055
- Type
- Medium-carbon steel
- Hardening
- Suitable for flame and induction hardening
- Forms
- Bar, full lengths or cut to size
Used for
- Sprockets and gears
- Cams and rollers
- Wear plates and strips
- Spindles and axles
- Agricultural parts
Good to know
EN9 is a cost-effective step up from mild steel when wear is the main problem rather than shock loading.
Its higher carbon means welding needs preheat and care. For welded parts, ask us about alternatives.
Part of our engineering steels range. Cut to size in Johannesburg and delivered anywhere in South Africa.
EN9 questions
What is EN9 used for?
Mostly sprockets, gears, cams and other parts that need wear resistance, often with the working surface flame or induction hardened.
Can EN9 be welded?
It can, but the higher carbon content needs preheating and controlled cooling to avoid cracking.
Phone, WhatsApp or email
Need EN9?
Sizes, quantities and where it needs to go. A photo of a handwritten list is fine. We reply with a written price.