Both DIN 1.2344 and 1.2343 steel are hot work tool steel, while there are different application due to different chemical composition and properties. Here is the chemical composition DIN 1.2344 vs 1.2343: Steel Grade C% Si% Mn% P%≤ S%≤ Cr% Mo% V% 1.2344 0.35-0.42 0.8-1.2 0.25-0.50 0.03 0.02 4.80-5.50 1.20-1.50 0.85-1.15 Grade C Si Mn P S Cr Mo V 1.2343 0.36-0.42 0.90-1.20 0.30-0.50 0.030 Max 0.030 Max 4.80-5.80 1.10-1.40 0.25-0.50

1.2344 vs 1.2343

Both DIN 1.2344 and 1.2343 steel are hot work tool steel, while there are different application due to different chemical composition and properties.

Here is the chemical composition DIN 1.2344 vs 1.2343:

Steel Grade	C%	Si%	Mn%	P%≤	S%≤	Cr%	Mo%	V%
1.2344	0.35-0.42	0.8-1.2	0.25-0.50	0.03	0.02	4.80-5.50	1.20-1.50	0.85-1.15
Grade	C	Si	Mn	P	S	Cr	Mo	V
1.2343	0.36-0.42	0.90-1.20	0.30-0.50	0.030 Max	0.030 Max	4.80-5.80	1.10-1.40	0.25-0.50