rockblade kilns

U10A

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The U10A grade refers to high-quality steel. The letter "U" at the beginning of the marking stands for "carbon steel," and the letter "A" at the end signifies high-quality steel. U10A is known as clean steel, free from alloy banding, suitable for differential hardening (Hamon). Its low manganese content allows for distinct features (choji).

  • Good hardenability during heat treatment
  • High surface hardness
  • Good stability after heat treatment

Chemical Composition

C

Mn

Si

P

S

Cr

Ni

Cu

0.97%

0.21%

0.22%

0.006%

0.009%

0.26%

0.21%

0.18%

 

Hardening

Temperature Soaking Time Hrc
780 - 810°C 1.5 minutes per mm 67

Recommended temperature for hamon: 790°C

Suggested Quenching Oil:Durixol V35 60°C

Tempering:
2 times for 40 minutes

Temperature Hrc
150°C 64
200°C 61
260°C 59
315°C 55