what steel on my toplock 2

[NEKI]

I obtained a top lock 2 with african thuya wood insert. The knife is very comfy in the hand and Im looking forward to carring it some, but I can't figure out what blade steel. I've seen it listed as 420, 440, and solingen stainless. If its 420, wich one J, hc, or does Boker have their own . Thanks for any input.

 

[Maarten]

I think it has the same steel as my Speedlock 2 .

That is 4034.

Stahlschlüssel

Bezeichnung

%
Kohlenstoff​

(Carbon)

%
Chrom
%
Molybdän
%
Vanadium
%
Mangan
%
Silizium
%
Kobalt
%
Kupfer​

(Copper)

%
Phosphor
%
Stickstoff​

(Nitrogen)

Rockwell
(HRC)​

420

0,4 - 0,5
12,0 - 14,0
-
-
-
-
-
-

-
54​

425-M

0,54
13,5
1,0
-
0,35
0,35
-
-

-
60​

440-A

0,6 - 0,75
16,0 - 18,0
0,75
-
1,0
1,0
-
-

-
56​

440-B

0,75 - 0,95
16,0 - 18,0
0,75
-
1,0
1,0
-
-

-
56​

440-C

0,95 - 1,2
16,0 - 18,0
0,75
-
1,0
1,0
-
-

-
58​

CPM-T-440-V

2,15
17,5
0,5
5,75
0,5
0,5
-
-

-
57 - 58​

1095

0,9 - 1,03
-
-
-
0,3 - 0,5
-
-
-

-
59​

4034

0,42 - 0,5
12,5 - 14,5
-
-
1,0
1,0
-
-

-
54 - 55​

12-C-27 San Vik

0,58
14,0
-
-
0,35
0,35
-
-

-
54​

154-CM

1,05
14,0
4,0
-
0,5
0,3
-
-

-
58 - 61​

ATS-34

1,05
14,0
4,0
-
0,4
0,35
-
-

-
58​

ATS-55

1,0
14,0
0,6
-
0,5
0,4
0,4
0,2

-
60​

AUS-6 (=6-A)

0,55 - 0,65
13,0 - 14,5
-
0,1 - 0,25
1,0
1,0
-
-

-
56​

AUS-8 (=8-A)

0,7 - 0,75
13,0 - 14,5
0,1 - 0,3
0,1 - 0,25
1,0
1,0
-
-

-
56​

D-2

1,4 - 1,6
11,0 - 13,0
0,7 - 1,2
1,1
-
0,6
-
-

-
58 - 61​

G-2 (=GIN-1)

0,9
15,5
0,3
-
0,6
0,37
-
-

-
58​

VG-10

0,95 - 1,05
14,5 - 15,5
0,9 - 1,2
0,1 - 0,3
0,5
0,6
1,3 - 1,5
-
0,3
-
58​

X.15 T.N.

0,4
15,5
2,0
0,3
-
-
-
-
-
0,2
58​

 

[NEKI]

Thanks Maartin, some good info especially the make up of g-2 (old spyderco's).
Never thought I would see the contents of that steel.