Materials & Structural Engineering for Production Boards
Steel Production Board Technology
Optimized for the Production Environment
Through continuous research and development in materials and structure, Samjung has advanced the performance of production boards. We apply steel grades specialized for concrete product production to raise durability and service life, and improve weight and production efficiency through an innovative lightweight structural design. With different technical approaches, we provide steel production board (steel pallet) solutions optimized for a wide range of production environments.
Choosing Materials to Fit the Purpose
Every production environment needs different characteristics. It starts with understanding the differences between materials.
SS
Structural Steel for Construction
SAPH
Steel Sheet for Automotive Structures
API
Material for Pipes
SM
Plate for Shipbuilding
HS540 and POS-SJ
Steel Grades Specialized for Concrete Product Production
Positioning and Application Environment by Steel Grade
We compare the characteristics of each steel grade together with the customer benefits, based on economy, load, wear and corrosion conditions.
| Comparison Item | Standard Steel Grades | Samjung-Developed Specialized Steel Grades | ||
|---|---|---|---|---|
| SS400 Standard | SS490 Enhanced | HS540 Premium | POSSJ Ultimate | |
|
Key Strengths · Customer Benefits |
Economy and Reliability
For general production, an economical basic steel grade |
High Mechanical Strength
Strength secured for high loads |
Wear Resistance A specialized steel grade designed for mass production and long-term durability | Corrosion Resistance A specialized steel grade designed for corrosion resistance and long-term use |
| Minimum Tensile Strength MPa | 400 | 490 | 540 | 500 |
|
Wear Resistance Related Properties |
Standard level | Increased strength | Designed for wear resistance | Increased strength |
| Corrosion Resistance | Standard level | Standard level | Standard level | Specialized for corrosion resistance |
| Expected Service Life | Existing level | Varies by application conditions |
Long-term durability · Potential for longer service life |
Potential for longer service life |
| Recommended Production Environment | General production conditions |
High mechanical load production conditions |
High-wear mass production environments |
Exposed to moisture and corrosion production conditions |
Premium Special Steel Found Only at Samjung
We introduce the composition design and core technology of each steel grade specialized for wear resistance and corrosion resistance.
HS540 Composition
Cu
Copper
Strength enhancement
Nb
Niobium Strength enhancement
Ti
Titanium Strength enhancement
Al
Solid-Solution Aluminum Strength enhancement
↓ Control of microstructure and strength characteristics
High Wear Resistance
Wear-resistant properties designed for repeated friction and load environments
POSSJ Composition
Cu
Copper Strength enhancement, contributes to corrosion suppression
Ni
Nickel Stabilizes the protective rust layer
Mn
Manganese Strength and microstructure control
Cr
Chromium Contributes to improved corrosion resistance
↓ Proprietary alloy composition blending and optimization
Enhanced Corrosion Resistance
Corrosion resistance specialized for concrete product production environments
Performance Verification Through Cyclic Corrosion Testing
Corrosion Resistance Confirmed
by Cyclic Corrosion Testing
Corrosion states of each material are compared by repeating salt spray, drying and wetting environments. The test is carried out under the following conditions based on KS ISO 14993.
From salt spray to wetting,
one cycle takes a total of 8 hours.
Dry Condition
60, 4 hours
Salt Spray Environment
35, 2 hours
Humid Environment
50, 2 hours
Weight Loss by Number of Cycles
We review the deflection that may occur in actual production through CAE structural analysis and propose the suitable steel grade and thickness.
| Weight (g) | Weight Loss per Area (g/cm²) | |||||||
|---|---|---|---|---|---|---|---|---|
| Specimen | Area (cm²) | Initial | 45 cycles | 87 cycles | 108 cycles | 45 cycles | 87 cycles | 108 cycles |
| SS400 (St.44.2) | 279 | 1193 | 1167 | 1148 | 1139 | 0.0933 | 0.1629 | 0.1948 |
| SS490 (St.52.3) | 300 | 1673 | 1643 | 1618 | 1608 | 0.1003 | 0.1836 | 0.2169 |
| POS-SJ | 270 | 1157 | 1134 | 1117 | 1114 | 0.0855 | 0.1489 | 0.1600 |
Weight Loss Rate per Area by Number of Cycles
Comparison of POS-SJ and SS490
30%–200% ↑
Corrosion Resistance
When the cyclic test is extended beyond 120 cycles, the corrosion resistance of POS-SJ improves
by at least 30% and up to 200% compared with SS490.
We Review Materials to Fit Your Use Environment Together
Share your products, board specifications, load and moisture exposure conditions. We will consult on the suitable material and structural direction.