Wear steels: HB400 or HB500?
The choice of wear steel directly affects component service life, maintenance needs, and total costs. The most common options are HB400 and HB500, which are designed for different wear conditions.
What does HB mean?
HB (Brinell Hardness) indicates the hardness of the steel.
The higher the number, the better the wear resistance – but machinability and formability decrease.
However, hardness alone does not determine the right choice. When selecting the correct material, you should also consider:
- type of wear (abrasive, impact, sliding)
- amount of impact
- structural load
- machinability
- weldability
- overall application requirements
HB400 and HB500 are therefore not direct substitutes, but solutions optimized for different needs.
How to choose the right steel grade?
HB400
→ for moderate wear and general use
→ easier to machine and weld
HB500
→ for heavy and continuous wear
→ longer service life, but more difficult to machine
Does material choice affect costs?
The cheapest material is not always the most economical if the part wears out quickly. The right wear steel can:
- extend service life
- reduce downtime
- lower maintenance needs
- reduce replacement costs
HB400 – a reliable all-round choice
HB400 is a versatile wear steel that offers a good balance between durability and workability.
Suitable when:
- wear is moderate
- good weldability is required
- parts need to be formed or machined
- a cost-effective solution is desired
Typical applications:
- buckets and blades
- conveyors
- general wear plates
HB500 – maximum wear resistance
HB500 is significantly harder and withstands heavy, continuous wear better than HB400.
Suitable when:
- wear is the primary challenge
- maximum service life is required
- minimizing downtime is critical
Typical applications:
- crushers and screens
- mining and quarrying applications
- heavy equipment wear parts
The result is what matters
The cheapest material is rarely the most cost-effective.
The right steel choice reduces downtime, extends service life, and lowers total costs.
Need help choosing?
Suomen Kulutusosa helps you find the right solution quickly.
