What is the steel in Carbon Steel Moras

[QuietBearr]

What is the specific steel that Frost or Erikson uses in what they call "Carbon steel"

Just wondering if anyone knows the actual steels name or composition....

 

[JNieporte]

Eriksson and Frosts' (and now Mora of Sweden, which is the name of those two companies as merged) use 1095 carbon steel. Frosts' is hardened to 58-59 and Eriksson at 59-60; the Mora of Sweden steel is 1095 carbon at 58-59 Rockwell hardness.

 

[QuietBearr]

thanks man, the stainless is 12C27 right?

 

[antonio_luiz]

Eriksson and Frosts' (and now Mora of Sweden, which is the name of those two companies as merged) use 1095 carbon steel. Frosts' is hardened to 58-59 and Eriksson at 59-60; the Mora of Sweden steel is 1095 carbon at 58-59 Rockwell hardness.

Thanks for that info - explains a lot about their edge retention. Do you know what steels are used in their laminated blades?

 

[JNieporte]

Eriksson's carbon steel blades are 1095 hardened to 59-60 on the Rockwell scale; Frosts' carbon steel blades are 1095 hardened to 58-59. Mora of Sweden uses 1095 carbon at 58-59 Rockwell.

Eriksson's stainless is Sandvik 12C27 modified at 57-58 Rockwell. Frosts' stainless is Sandvik 12C27 at 56-58. Mora of Sweden uses Sandvik 12C27 (same as Frosts') at 57-58.

The laminated steels are as follows:
Eriksson uses outer layers of Sandvik 8C13 and a center layer of M6 at 60-62.
Frosts' uses outer layers of Sandvik 12C27 and a center layer of M6 at 60-61.
Mora of Sweden uses outer layers of Sandvik 12C27 and a center layer of M6 at 61-62.

Okay, so what is M6? I don't know. I'll say that it performs like ATS-34 or 154CM, but I don't know the structural make-up of it. I got the M6 answer from a friend in Dalarna (the providence that Mora is in). Internet research turned nothing up on the center steel, so I'm going with this answer.

 

[QuietBearr]

Okay, so what is M6? I don't know. I'll say that it performs like ATS-34 or 154CM, but I don't know the structural make-up of it. I got the M6 answer from a friend in Dalarna (the providence that Mora is in). Internet research turned nothing up on the center steel, so I'm going with this answer.

M6 tool steel (high speed steel)

C 0.75-0.85
Mn 0.15-0.40
Si 0.20-0.45
Cr 3.75-4.50
Ni 0.3
Mo 4.50-5.50
W 3.75-4.75
V 1.30-1.70
Co 11.00-13.00
Cu 0.25
P 0.03
S 0.03

 

[Vicarious Reality]

Nice, i've always wondered this

 

[dePaul]

Eriksson's carbon steel blades are 1095 hardened to 59-60 on the Rockwell scale; Frosts' carbon steel blades are 1095 hardened to 58-59. Mora of Sweden uses 1095 carbon at 58-59 Rockwell.

Eriksson's stainless is Sandvik 12C27 modified at 57-58 Rockwell. Frosts' stainless is Sandvik 12C27 at 56-58. Mora of Sweden uses Sandvik 12C27 (same as Frosts') at 57-58.

The laminated steels are as follows:
Eriksson uses outer layers of Sandvik 8C13 and a center layer of M6 at 60-62.
Frosts' uses outer layers of Sandvik 12C27 and a center layer of M6 at 60-61.
Mora of Sweden uses outer layers of Sandvik 12C27 and a center layer of M6 at 61-62.

Okay, so what is M6? I don't know. I'll say that it performs like ATS-34 or 154CM, but I don't know the structural make-up of it. I got the M6 answer from a friend in Dalarna (the providence that Mora is in). Internet research turned nothing up on the center steel, so I'm going with this answer.

I've been in touch with these companies and this is the answer I've got:

The SS line of Frosts sports Sandvik 12C27, HRC 58-59. The carbon steel Frosts uses is Uddeholm UHB 20C (eq. to AISI 1095), cold rolled and heat treated to 59-61 HRC. Other carbon steel used: German C.D. Wälzholz-Brockhaus GmbH CK 101 and CK 95, cold rolled, HRC 60.

The laminated steel core in models from Frosts are made of Uddeholm 2140 (eq. to AISI O1), HRC 60-62. Outer layer is AISI 420J2.

The standard SS from KJ Eriksson (no longer existing) is Sandvik 12C27M (Modified), HRC 58. The Co changed names and the steel used nowadays is Sandvik 12C27.

KJE’s carbon steel was Uddeholm UHB15LM (eq. To AISI 1778) and DIN CK 75/80 (eq. to AISI 1080), both steels HRC 58. Since the Co changed names, these steels have been replaced with Uddeholm UHB 20C (eq. AISI 1095) and C.D. Wälzholz-Brockhaus GmbH CK 101 and CK 95.

The Hultafors SS series is japanese AUS-8 and the carbon variant is SK-5 (eq. to AISI 1080).

The Lindblom knives feature a chinese SS/EN 715 stainless steel. HRC 58-60.

Previously, the blades from Frost were a little bit thinner than those from KJ. Today, they are the same thickness (the thinner variant).

~Paul~

 

[mtngunr]

update to an old thread but everybody quotes it....as of Nov272013, company production manager states the carbon steel blades are west euro C100 and no longer swedish, their website as well only describes the Sandvik stainless as swedish