| 1946 | Yoshiaki Hamada, founding president, established Hamada Iron Works as a cooperative factory for Japan Steel Works Ltd, Hiroshima |
| 1953 | Change of organization from Hamada Iron Works, a joint-stock company of 1 million yen capitalization |
| 1961 | Start of construction of Hachihonmatsu plant in Hachihonmatsu-cho, Kamo-gun, Hiroshima, completed and opened in November, 1961 |
| 1961 | Start of manufacturing and selling of special purpose machine |
| 1966 | Absorbed Tanaka Seiki Co., Ltd. To expand and increase production |
| 1966 | Build a new building in November 1966 |
| 1969 | Capitalization increased to 15 million yen |
| 1979 | Hamada Hiromi became president of the second generation |
| 1989 | Established a joint venture with TRIM of Malaysia |
| 1990 | Expansion of the Hachihonmatsu plant |
| 1991 | Company name was changed to HAMADA CORPORATION |
| 2001 | Certified ISO 9001 2000/JIS Q 9001:2000 |
| 2002 | Certified ISO 14001 1996/JIS Q 14001:1996 |
| 2005 | Hamada Tadahiko became president of the third generation |
| 2008 | Capitalization increased to 30 million yen |
| 2009 | Medium and small sized business support for development of products was adapted |
| 2011 | Private business support for reinforcement of development and practical use was adapted |
| 2012 | Hiroshima prefecture's engineering innovation support was adapted |
| 2012 | Domestic business location expenses support was adapted |
