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Mogalvin TriChrome
Mogalvin Trichrome is a Galvanized steel Coils from UNICOIL, treated with Trivalent Chrome (Cr³) passivation, which is an alternate surface treatment to the Hexavalent chrome passivation. Trivalent Chrome passivation is eco- friendly and offers good corrosion resistance. By applying Trivalent chrome passivation, Mogalvin – Trichrome becomes ROHS in compliance as UNICOIL uses zinc with ≤ 90ppm lead which is maximum allowed limit as per SASO ASTM A653/A653M and ASTM A653/A653M. The other elements, Mercury, Cadmium, PBB and PBDE are not present in the Galvanized steel.
Standards
Advantage:
- Lead Safe Zinc (less than 90ppm)
- Trivalent Chrome Passivation (No Hexavalent Chrome)
- No – Mercury, PBB & PBDE.
Standards and Grades:
| Standard | Description | Grades |
| SASO-ASTM A653/A653M | Standard Specification for Steel Sheet, Zinc Coated (Galvanized) or Zinc Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process | CS-Type A, B, C
FS Type A, B SS33, SS37, SS40, SS50, SS55, SS60 & SS80 |
| ASTM A653/A653M | Standard Specification for Steel Sheet, Zinc Coated (Galvanized) or Zinc Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process | |
| EN 10346 | Continuously hot-dip coated steel flat products for cold forming – Technical delivery conditions | DX51D. DX52D
S220GD, S250GD, S280GD, S320GD, S350GD, S390GD, S420GD & S550GD |
| JIS G 3302 | Hot-Dip Zinc-Coated steel sheet and strip | SGCC, SGCD1, SGC340, SGC400, SGC440 & SGC570 |
| AS 1397 | Continuous Hot-Dip Metallic coated steel sheet and Strip-Coatings of Zinc and Zinc alloyed with Aluminum and Magnesium | S250, S300, S350, S450, S550 |
Tolerance on Nominal Thickness
| Thickness (mm) | ASTM | ½ ASTM |
| 0.20 – 0.40 | ± 0.040 | ± 0.020 |
| 0.401 – 1.00 | ± 0.050 | ± 0.025 |
| 1.01 – 1.50 | ± 0.065 | ± 0.033 |
| 1.51 – 2.00 | ± 0.075 | ± 0.038 |
| 2.00 – 2.50 | ± 0.100 | ± 0.050 |
| 2.50 – 3.00 | ± 0.170 | ± 0.085 |
Note: Restricted or customized thickness tolerances can be offered on request.
Product Features
| Coils | Slit Coils | Cut Sheet | |
| Thickness (TCT – mm) | 0.20- 3.00 | 0.25 – 3.00 | 0.30 – 3.00 |
| Width (mm) | 700 to 1300 | 45 Min | 700 – 1,300 |
| Zinc Coating (GSM)* | 40 to 400 (total both sides) | ||
| Spangles | Regular / Minimized Spangles (Skin Passed) | ||
| Passivation | Trivalent Chrome | Trivalent Chrome | Trivalent Chrome |
| Oiling (mg/m2) | 200 – 1000 | Not Applicable | Not Applicable |
| Coil ID (mm) | 508 (610 optional) | 508 (160, 200 & 300 for cable industry) | Not Applicable |
| Length (mm) | Not Applicable | Not Applicable | 500 – 4,000 |
| Coil Weight / Pallet Weight (Kgs) | 3,000 – 12,000 | 3 to 8kg/mm of Width | 3,000 Max |
* Minimum zinc coating mass of 40 to 400 gsm available for thickness above 0.30 mm thickness.
(Less than 60 gsm available for standards other than SASO ASTM)
TCT – Total Coated Thickness (Steel thickness + Zinc coating thickness)
