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1084


 

 

1084 is nearly identical to 1080 resulting in it being one of the easiest steels to work and heat treat with a variety of equipment but also having slightly increased edge holding. This combination makes it one of the best choices for beginners to expert bladesmiths.

 

 

Recommended Working Sequence For 1084

 

Forging: to 2150 F (1175 C). Do not forge below 1500 F (815 C)

 

Normalizing: Heat to 1600 F (870 C). Cool in still air.

 

Annealing: Heat to 1500 F (815 C). Furnace cool to 1200 F (650 C) at a rate not exceeding 50 F (28 C) per hour.

 

Grinding or Machining

 

Hardening: Austenitize- Heat to 1500 F (815 C). In thicker sections can be quenched in water or brine with extreme care but can also be oil quenched in sections under 1/4 in. (6.35 mm) thick as the preferred method.

 

Tempering: As-quenched hardness of approximately 65 HRC. Hardness can be adjusted downward by proper tempering

 

Polish

 

 

 

I-T / TTT diagram for 1084:

 

 

 

 

The following tempering guidelines apply to 1084 that has been hardened to industrial standards. Knifemakers using other methods will have to adjust the resulting hardness numbers downward for the same temperatures.

 

Tempering Temperature

Rockwell

Hardness

oC

oF

HRC

149

300

65

177

350

63-64

204

400

60-61

232

450

57-58

260

500

55-56

288

550

53-54

316

600

52-53

343

650

50

 

 

 

*The above information is based upon personal experience and testing along with data from ASM International, Carpenter Steel and Crucible Service Centers.

 


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All images and text Copyrighted 2006 Kevin R. Cashen, www.cashenblades.com, all rights reserved.