Cross-Reference Charts

Cross-Reference Charts

Mold Finish Cross Reference Chart

Type of Finishes
Current SPI Finish Numbers
Roughness Comparison R.A.
Diamond
#3 Diamond Buff
A1
0-1
#6 Diamond Buff
A2
1-2
#15 Diamond Buff
A3
2-3
Paper
600 Grit
B1
2-3
400 Grit
B2
4-5
320 Grit
B3
9-10
Stone
600 Stone
C1
10-12
400 Stone
C2
25-28
320 Stone
C3
38-42
Dry Blasted
#11 Glass Bead
D1
10-12
240 Aluminum Oxide Blast
D2
26-32
#24 Aluminum Oxide Blast
D3
190-230

Global Steel Cross Reference Tool

This chart references common tooling materials and their designations in various regions. Contact Progressive at tech@procomps.com for materials not listed here.  

Materials
UA SAE/AISI
Japan
Germany W.nbr
United Kingdom
Low Carbon Steels
1018
S15C
1.0453
081A15
(up to .35% Carbon)
4130
SCM2
708A30
8630
SNCM220H
1.6523
805A20
Medium Carbon Steels
P20
1.2311/1.2330
4659
(.35-.50%Carbon)
4140
SCM440
1.7225
708A42
A-2
SKD12
1.2363
BA2
High Carbon and
D-2
SKD11
1.2379
BD2
Tool Steels
H-13
SKD61
1.2344
BH13
(up to 1.50% Carbon)
M-2
SKH51
1.3343
BM2
O-1
SKS21
1.2510
BO1
O-2
SKS93
1.2842
S-7
SKH3
BT4
Stainless Steel
303
SUS303
1.4305
303S21
420
SUS420J1
1.4021
X20Cr13
440C
SUS440C
1.4125