# Krupp armor

> steel commonly used for warships in the early 20th century

**Wikidata**: [Q2668222](https://www.wikidata.org/wiki/Q2668222)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Krupp_armour)  
**Source**: https://4ort.xyz/entity/krupp-armor


## References

1. Freebase Data Dumps. 2013