POSMAC Steel (The Revolutionary Steel) “PosMAC® Super” is an innovative hot-dip galvanized product developed with POSCO’s unique technology. It has excellent performance even in extremely corrosive conditions and can be used for various application to expand the service life of steel structures.
The differentiated coating layer composition of Zn – 5% Mg – 12% Al achieves a corrosion resistance 10 times greater than that of conventional hot-dip galvanized steel sheets (GI).
It’s good hardness and high friction factor also provide good anti-galling and workability.
Applications
- Photovoltaic (solar) support frame
- Inner & outer walls of buildings
- Outdoor units of air conditioners
- Automotive components
- PosMAC 1.5: Zn-1.5%Mg-1.5%Al (for automotive, home appliances)
- PosMAC 3.0: Zn-3.0%Mg-2.5%Al (architectural materials)
- Distributing board, pipes, plant factory structure, vinyl house pad, stock farm, truss deck, steel curtain wall, scaffold, stud
- Photovoltaic (solar) support frame
- Inner & outer walls of buildings
- Outdoor units of air conditioners
- Automotive components
- PosMAC 1.5: Zn-1.5%Mg-1.5%Al (for automotive, home appliances)
- PosMAC 3.0: Zn-3.0%Mg-2.5%Al (architectural materials)
- Distributing board, pipes, plant factory structure, vinyl house pad, stock farm, truss deck, steel curtain wall, scaffold, stud
Products, Characteristics & Applications
HR Base POSMAC
- Coating mass: 60 ~ 350g/m² (both sides)
- Post treatment: Cr-free (NB / NT), Chromate (CL)
- Sizes in production (CQ): Thickness 1.1 ~ 4.5 mm / Width 800 ~ 1,650 mm (width may vary depending on the thickness)
POSMAC (HR base) Specifications
| Grade | POSCO | KS D 3030 | GI(H) Equivalents | Mechanical Properties (MPa%) | |||
|---|---|---|---|---|---|---|---|
|
|
|
|
|
YP |
TS |
EL |
CMB |
|
CQ |
PosMAC-C |
KS-SGMHC |
JIS-SGHC, EN-DX510, ASTM A653-CS, FS |
170 – 400 |
270 – 450 |
2— |
1T |
|
DQ |
PosMAC-D |
– |
– |
—245 |
270 – 400 |
35— |
1T |
|
Structural |
PosMAC-340 |
KS-SFMH340 |
JIS-SGMH340
EN-S250GD |
245 – 450 |
350 – 470 |
20— |
1T |
|
PosMAC-400 |
KS-SFMH400 |
JIS-SGH400 |
295 – 490 |
410 – 560 |
18— |
2T |
|
|
PosMAC-440 |
KS-SFMH440 |
JIS-SGH440
A653H-SS340 |
335 – 490 |
450 – 600 |
18— |
3T |
|
|
PosMAC-Y340 |
– |
EN-HX340LAD |
340— |
410— |
21— |
2T |
|
|
PosMAC-490 |
KS-SFMH490 |
JIS-SGH490 |
365 – 600 |
490 – 650 |
16– |
3T |
|
|
PosMAC-540 |
KS-SFMH540 |
JIS-SFH540 |
450 – 600 |
540 – 650 |
16– |
3T |
|
|
PosMAC-700 |
– |
– |
500— |
700— |
8— |
3T |
|
*CMB: Coating Metal Bending test
CR Base POSMAC
- Coating mass: 60 ~ 350g/m² (both sides)
- Post treatment: Cr-free (NB / NT), Chromate (CL)
- Sizes in production (CQ): Thickness 0.4 ~ 2.0 mm / Width 800 ~ 1,600 mm (width may vary depending on the thickness)
POSMAC (CR base) Specifications
| Grade | POSCO | KS D 3030 | GI(H) Equivalents | Mechanical Properties (MPa%) | |||
|---|---|---|---|---|---|---|---|
|
|
|
|
|
YP |
TS |
EL |
CMB |
|
CQ |
C-PosMAC-C |
KS-SGMCC |
JIS-SGCC, EN-DX510, ASTM A653-CS |
170 – 400 |
270 – 450 |
28— |
1T |
|
DQ |
C-PosMAC-D |
KS-SGMCD2 |
JIS-SFCD2, EN-DX53D |
—245 |
270 – 400 |
40— |
1T |
|
DDQ |
C-PosMAC-N |
KS-SGMCD3 |
JIS-SGC03, EN-DX540, ASTM A653-DDS |
—245 |
270 – 400 |
43— |
1T |
|
Structural |
C-PosMAC-340 |
KS-SFMH340 |
JIS-SGC340, EN-S250GD |
245 – 450 |
340 – 500 |
20— |
1T |
|
C-PosMAC-400 |
KS-SFMH400 |
JIS-SGC400 |
295 – 490 |
400 – 560 |
18— |
2T |
|
|
C-PosMAC-440 |
KS-SGMC440 |
JIS-SGC440 |
335 – 490 |
440 – 600 |
18— |
2T |
|
|
C-PosMAC-490 |
KS-SGMC490 |
JIS-SGC490 |
365 – 600 |
490 – 650 |
16– |
3T |
|
|
C-PosMAC-540 |
– |
– |
450 – 600 |
540 – 650 |
16– |
3T |
|
|
C-PosMAC-700 |
KS-SGMC570 |
JIS-SGC570 |
560— |
570— |
8— |
3T |
|
*CMB: Coating Metal Bending test
Notes: The product standards are for reference. Please be sure to confirm the recent standards when making orders with Technical Services.