Lohman LO-R 4528 Stainless Steel (N690 Equivalent)


Lohman Stainless Steel is an equivalent of N690.
Typical Analysis:
C Cr Mo V Co
1,05 17,5 1,2 0,1 1,5

Steel Characteristics and Application
Martensitic Stainless Steel with good edge holding ability. It is used for all kinds of shaped
and flat knives in the food processing industry, e.g. cutter knives and knives in the fish-processing industry.

Heat Treatment:
Soft Annealing: 800 – 850°C, Furnace cooling <550°C, then air cooling
Hardening: 1000 -1040°C, Oil quenching
Tempering: 240 – 300°C, (prefered tempering range), for 55 – 58 HRC 460 – 480 °C, (increased toughness, but reduced corrosion resistance)

For the tempering diagram see: https://www.lohmann-stahl.de/fileadmin/redaktion/downloads/1.4528.pdf

***Stock can be obtained within a few days if not available immediately.



Corrosion-resistant steels

Corrosion-resistant steels are characterised by an increased resistance to acids and corrosion. They are basically divided into the categories of austenitic, ferritic, and martensitic steel.
Martensitic corrosion-resistant steels offer high protection against corrosion in the hardened state, excellent wear resistance, and outstanding cutting edge retention.
Austenitic corrosion-resistant steels offer very good corrosion resistance and very good hot and cold form-ability. They are generally cryogenic steels.
Ferritic corrosion-resistant steels are generally low in nickel and exhibit a high resistance to chloride-induced stress corrosion cracking.

Additional information

Weight N/A
Dimensions N/A

Lohman SS – 3,15 x 240 x 1000mm (Sheet), Lohman SS – 3,6 x 80 x 1000mm, Lohman SS – 4 x 400 x 1000mm (Sheet), Lohman SS – 4 x 80 x 1000mm

You may also like…