PPGI Specifications Overview
Understanding PPGI specifications is essential for selecting the right product for your project. Whether you're sourcing PPGI coils for manufacturing or PPGI sheets for construction, proper specification ensures optimal performance and cost-efficiency.
This guide covers all technical PPGI sheet specifications and PPGI coil specifications, including dimensions, coating weights, mechanical properties, and quality standards.
📋 PPGI Quick Specification Reference
| Thickness Range | 0.12 - 1.2 mm |
| Width Range | 600 - 1500 mm |
| Standard Coil Weight | 3 - 10 tons |
| Zinc Coating | Z40 - Z275 (40-275 g/m²) |
| Paint Thickness (Top) | 15 - 25 μm |
| Common Steel Grade | DX51D, DX52D, DX53D |
For a basic introduction to this material, see our guide on what is PPGI.
PPGI Sheet Specifications
PPGI sheet specification parameters define the dimensions and properties of flat sheet products. Here are the standard specifications:
PPGI Sheet Standard Size
| Parameter | Standard Range | Common Sizes |
|---|---|---|
| Thickness | 0.12 - 1.2 mm | 0.30, 0.35, 0.40, 0.45, 0.50, 0.60 mm |
| Width | 600 - 1500 mm | 914, 1000, 1200, 1219, 1250 mm |
| Length | Custom cut | 1000, 2000, 2440, 3000, 6000 mm |
PPGI Sheet Properties
Key PPGI sheet properties that define product performance:
| Property | Typical Value | Test Standard |
|---|---|---|
| Yield Strength | 140 - 300 MPa | EN 10346 |
| Tensile Strength | 270 - 420 MPa | EN 10346 |
| Elongation | 18 - 26% | EN 10346 |
| Hardness | HRB 50-70 | ASTM E18 |
| Pencil Hardness | ≥2H | ASTM D3363 |
| Gloss (60°) | 30-80 units | ASTM D523 |
| Adhesion | 0-1 rating | ASTM D3359 |
| T-Bend | ≤2T | ASTM D4145 |
| Impact Resistance | ≥9 Joules | ASTM D2794 |
- Metric (Asia, Europe): 1000×2000mm, 1200×2400mm, 1250×2500mm
- Imperial (US, Middle East): 3'×8' (914×2438mm), 4'×8' (1219×2438mm)
- Custom lengths: Available up to 12000mm for special orders
Browse our PPGI sheet products for available standard sizes and custom options.
PPGI Coil Specifications
PPGI coil specification parameters are essential for manufacturers and large-scale projects. Coil form offers better efficiency and lower cost per unit weight.
Standard PPGI Coil Specifications
| Parameter | Standard Range | Notes |
|---|---|---|
| Thickness | 0.12 - 1.2 mm | ±0.02mm tolerance for premium grade |
| Width | 600 - 1500 mm | Can be slit to narrower widths |
| Coil Weight | 3 - 10 tons | Depends on thickness and width |
| Coil Inner Diameter (ID) | 508 mm / 610 mm | 508mm standard; 610mm for thick gauge |
| Coil Outer Diameter (OD) | 1000 - 1500 mm | Varies by coil weight |
| Coil Length | Continuous | Calculated from weight, thickness, width |
Coil Weight Calculation
📐 PPGI Coil Weight Formula
Weight (kg) = Thickness (mm) × Width (mm) × Length (m) × 7.85 ÷ 1000
Example: 0.5mm × 1200mm × 2000m × 7.85 ÷ 1000 = 9,420 kg (≈9.4 tons)
Note: 7.85 is the density of steel in g/cm³. Actual weight may vary slightly due to coating.
For detailed weight calculations, see our PPGI thickness and weight guide.
Explore our PPGI coil products for available specifications.
Thickness Specifications
PPGI thickness selection depends on the application requirements. Here's a comprehensive thickness guide:
Available Thickness Range
| Thickness (mm) | Gauge (Approx.) | Weight (kg/m²) | Typical Applications |
|---|---|---|---|
| 0.12 - 0.17 | 36 - 34 | 0.94 - 1.33 | Light appliance panels, interior linings |
| 0.18 - 0.25 | 33 - 30 | 1.41 - 1.96 | Appliance housings, ductwork |
| 0.30 - 0.35 | 29 - 28 | 2.36 - 2.75 | Residential roofing, light cladding |
| 0.40 - 0.45 | 27 - 26 | 3.14 - 3.53 | Commercial roofing, wall panels |
| 0.50 - 0.60 | 25 - 24 | 3.93 - 4.71 | Industrial roofing, structural cladding |
| 0.70 - 0.80 | 22 - 21 | 5.50 - 6.28 | Heavy-duty cladding, floor decking |
| 1.00 - 1.20 | 19 - 18 | 7.85 - 9.42 | Structural applications, heavy loads |
Thickness Selection Guide
| Application | Recommended Thickness | Reason |
|---|---|---|
| Residential roofing | 0.30 - 0.45 mm | Balance of economy and durability |
| Commercial roofing | 0.45 - 0.60 mm | Better wind resistance, longer span |
| Industrial roofing | 0.50 - 0.70 mm | Heavy-duty performance required |
| Wall cladding | 0.40 - 0.50 mm | Good flatness and impact resistance |
| Appliances | 0.30 - 0.50 mm | Formability and appearance |
| Gutters | 0.40 - 0.55 mm | Stiffness for spanning |
Zinc Coating Specifications
Zinc coating weight is critical for corrosion protection. The "Z" designation indicates total zinc coating on both sides in g/m².
Zinc Coating Weight Standards
| Designation | Total Coating (g/m²) | Per Side (g/m²) | Thickness per Side (μm) |
|---|---|---|---|
| Z40 | 40 | 20 | ~3 |
| Z60 | 60 | 30 | ~4 |
| Z80 | 80 | 40 | ~6 |
| Z100 | 100 | 50 | ~7 |
| Z120 | 120 | 60 | ~8 |
| Z150 | 150 | 75 | ~10 |
| Z180 | 180 | 90 | ~13 |
| Z200 | 200 | 100 | ~14 |
| Z275 | 275 | 137.5 | ~19 |
Zinc Coating Selection by Environment
| Environment | Corrosivity Class | Recommended Zinc |
|---|---|---|
| Indoor, heated buildings | C1 - Very low | Z40 - Z60 |
| Indoor, unheated / condensation possible | C2 - Low | Z60 - Z100 |
| Urban and industrial, moderate pollution | C3 - Medium | Z100 - Z150 |
| Industrial, coastal areas (moderate) | C4 - High | Z150 - Z200 |
| Heavy industrial, marine, tropical humid | C5 - Very high | Z200 - Z275 (or use PPGL) |
For coastal or industrial environments, consider PPGL (Pre-Painted Galvalume) instead of high-zinc PPGI. PPGL's aluminum-zinc coating provides 2-6x better corrosion resistance and may be more cost-effective than Z275 PPGI.
Paint Coating Specifications
Paint coating specifications determine appearance, durability, and weather resistance.
Paint Layer Thickness
| Layer | Standard Thickness | Premium Thickness |
|---|---|---|
| Topcoat (Face) | 15 - 20 μm | 20 - 25 μm |
| Primer (Face) | 5 - 8 μm | 8 - 10 μm |
| Back Coat | 5 - 7 μm | 10 - 15 μm |
| Total (Face) | 20 - 28 μm | 28 - 35 μm |
Paint System Specifications
| Paint Type | Film Thickness | Gloss Range | Expected Life |
|---|---|---|---|
| Regular Polyester (PE) | 18 - 22 μm | 10 - 90% | 8 - 15 years |
| Silicon Modified Polyester (SMP) | 20 - 25 μm | 20 - 40% | 15 - 20 years |
| High Durability Polyester (HDP) | 22 - 28 μm | 20 - 50% | 18 - 25 years |
| PVDF (70% Kynar) | 25 - 30 μm | 20 - 35% | 25 - 35 years |
| Print/Woodgrain | 30 - 35 μm | 5 - 15% | 15 - 20 years |
Paint Performance Requirements
| Test | Standard | PE | SMP | PVDF |
|---|---|---|---|---|
| Pencil Hardness | ASTM D3363 | ≥H | ≥H | ≥HB |
| T-Bend | ASTM D4145 | ≤2T | ≤2T | ≤1T |
| Reverse Impact | ASTM D2794 | ≥9J | ≥9J | ≥9J |
| Adhesion (Cross-cut) | ASTM D3359 | 0-1 | 0-1 | 0-1 |
| Salt Spray (Scribe) | ASTM B117 | 500h | 750h | 1000h |
| MEK Rubs | ASTM D4752 | ≥100 | ≥100 | ≥100 |
| Color Retention (ΔE) | ASTM D2244 | ≤5 (5yr) | ≤3 (5yr) | ≤3 (10yr) |
Steel Grade Specifications (DX51D)
The base steel grade determines mechanical properties. DX51D is the most common grade for PPGI.
Common PPGI Steel Grades (EN 10346)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Use |
|---|---|---|---|---|
| DX51D | 140 - 300 | 270 - 420 | ≥22 | General purpose, forming |
| DX52D | 140 - 300 | 270 - 420 | ≥24 | Drawing quality |
| DX53D | 140 - 260 | 270 - 380 | ≥26 | Deep drawing |
| S250GD | ≥250 | ≥330 | ≥19 | Structural |
| S280GD | ≥280 | ≥360 | ≥18 | Structural |
| S320GD | ≥320 | ≥390 | ≥17 | High-strength structural |
| S350GD | ≥350 | ≥420 | ≥16 | High-strength structural |
📋 DX51D Grade - Most Common PPGI Specification
DX51D+Z (or DX51D+AZ for Galvalume) is the standard grade for most PPGI applications. The "D" indicates suitable for cold forming.
- Typical composition: C ≤0.12%, Mn ≤0.50%, P ≤0.045%, S ≤0.045%
- Surface quality: A (improved), B (regular)
- Best for: Roofing, wall cladding, general construction, appliances
Equivalent Standards
| EN 10346 | ASTM A653 | JIS G3302 | GB/T 12754 |
|---|---|---|---|
| DX51D+Z | CS Type B | SGCC | DC51D+Z |
| DX52D+Z | DS Type B | SGCD1 | DC52D+Z |
| DX53D+Z | DDS | SGCD2 | DC53D+Z |
| S250GD+Z | SS Grade 33 | SGC340 | S250GD+Z |
| S280GD+Z | SS Grade 37 | SGC400 | S280GD+Z |
| S350GD+Z | SS Grade 50 | SGC490 | S350GD+Z |
Mechanical Properties
Complete mechanical property specifications for standard PPGI grades:
DX51D Mechanical Properties (Most Common)
| Property | Value | Test Method |
|---|---|---|
| Yield Strength (ReH) | 140 - 300 MPa | EN ISO 6892-1 |
| Tensile Strength (Rm) | 270 - 420 MPa | EN ISO 6892-1 |
| Elongation (A80) | ≥22% | EN ISO 6892-1 |
| r-value (Anisotropy) | ≥1.0 | EN ISO 10113 |
| n-value (Hardening) | ≥0.16 | EN ISO 10275 |
Bending & Forming Properties
| Thickness | Min Bend Radius (Interior) |
|---|---|
| 0.30 - 0.50 mm | 0 - 0.5t |
| 0.50 - 0.80 mm | 0.5t - 1t |
| 0.80 - 1.20 mm | 1t - 1.5t |
t = material thickness. Actual minimum bend radius depends on steel grade, coating, and bend direction.
Standard Colors
Standard color PPGI options vary by manufacturer, but common stock colors include:
Common RAL Colors
| Color Family | RAL Code | Color Name |
|---|---|---|
| White/Gray | RAL 9002 | Grey White |
| RAL 9003 | Signal White | |
| RAL 7035 | Light Grey | |
| Blue | RAL 5015 | Sky Blue |
| RAL 5005 | Signal Blue | |
| RAL 5012 | Light Blue | |
| Green | RAL 6005 | Moss Green |
| RAL 6029 | Mint Green | |
| Red | RAL 3005 | Wine Red |
| RAL 3009 | Oxide Red | |
| Brown/Beige | RAL 8017 | Chocolate Brown |
| RAL 1015 | Light Ivory |
- Stock colors: Available in small quantities with shorter lead time
- Custom colors: Any RAL, Pantone, or custom match available; typically 5-10 ton minimum
- Color matching: ΔE ≤ 1.0 for same batch; ΔE ≤ 2.0 between batches
Tolerances & Standards
PPGI products must meet dimensional and coating tolerances per international standards.
Dimensional Tolerances (EN 10143)
| Parameter | Normal Tolerance | Special Tolerance |
|---|---|---|
| Thickness (0.35-0.60mm) | ±0.04 mm | ±0.02 mm |
| Thickness (0.60-1.00mm) | ±0.05 mm | ±0.03 mm |
| Thickness (1.00-1.60mm) | ±0.06 mm | ±0.04 mm |
| Width (600-1500mm) | 0 to +5 mm | 0 to +3 mm |
| Flatness | ≤15 mm/m | ≤10 mm/m |
| Camber | ≤5 mm/m | ≤3 mm/m |
Applicable Standards
| Region | Standard | Coverage |
|---|---|---|
| European | EN 10346, EN 10169 | Base material, coating |
| American | ASTM A653, ASTM A755 | Base material, painting |
| Japanese | JIS G3302, JIS G3312 | Galvanized, pre-painted |
| Chinese | GB/T 12754 | Color-coated steel |
| International | ISO 4998 | Structural quality |
How to Specify PPGI
When ordering PPGI, provide these key specifications:
📋 Complete PPGI Specification Example
PPGI Coil, DX51D+Z100, 0.50 × 1200 mm, RAL 5015 PE/Gray Back, 5-7 tons
| Product: | PPGI Coil |
| Steel Grade: | DX51D (general forming grade) |
| Zinc Coating: | Z100 (100 g/m² total) |
| Thickness: | 0.50 mm |
| Width: | 1200 mm |
| Top Color: | RAL 5015 (Sky Blue) |
| Top Paint: | PE (Polyester) |
| Back Color: | Gray |
| Coil Weight: | 5-7 tons per coil |
Specification Checklist
- Product form: Coil or Sheet
- Steel grade: DX51D, DX52D, S250GD, etc.
- Zinc coating: Z60, Z100, Z150, etc.
- Thickness: In mm, with tolerance if special
- Width: In mm
- Length: For sheets, or coil weight for coils
- Top paint: Type (PE, SMP, PVDF) and color (RAL number)
- Back paint: Type and color
- Coil ID: 508mm or 610mm
- Quantity: In tons or pieces
Need help with specifications? Contact our technical team for assistance.
Frequently Asked Questions
What is the standard thickness of PPGI sheet?
PPGI sheet thickness ranges from 0.12mm to 1.2mm. The most common thicknesses for roofing and cladding are 0.35mm to 0.60mm. Residential roofing typically uses 0.30-0.45mm, while commercial/industrial applications use 0.45-0.70mm.
What does Z100 mean in PPGI specifications?
Z100 indicates the zinc coating weight is 100 g/m² total (both sides combined), or approximately 50 g/m² per side. This is a common specification for general exterior construction applications. Higher numbers (Z150, Z200) mean more zinc and better corrosion protection.
What is DX51D grade in PPGI?
DX51D is a European standard (EN 10346) steel grade commonly used for PPGI. It's a general-purpose forming grade with yield strength of 140-300 MPa and minimum elongation of 22%. The "D" indicates it's suitable for cold forming operations like roll forming roofing sheets.
What is the standard width of PPGI coil?
Standard PPGI coil widths range from 600mm to 1500mm. Common widths include 914mm (3 feet), 1000mm, 1200mm, 1219mm (4 feet), and 1250mm. Width selection depends on the final product requirements and roll-forming machine specifications.
What are PPGI sheet properties?
Key PPGI sheet properties include: yield strength (140-300 MPa), tensile strength (270-420 MPa), elongation (≥22%), pencil hardness (≥2H), T-bend flexibility (≤2T), impact resistance (≥9 Joules), and excellent adhesion (0-1 rating). These properties ensure good formability and coating durability.
How do I choose between PE, SMP, and PVDF coating?
Choose based on environment and budget: PE (Polyester) for budget projects and mild environments (10-15 year life); SMP for better UV resistance in tropical climates (15-20 years); PVDF for premium projects, coastal areas, and maximum durability (25-35 years).
Conclusion
Understanding PPGI specifications ensures you select the right product for your application. Key specification parameters include:
- Thickness: Match to structural and application requirements
- Zinc coating: Select based on environmental corrosivity
- Steel grade: DX51D for most applications; structural grades for higher loads
- Paint system: PE for economy, SMP for tropical, PVDF for premium
- Dimensions: Specify width, length/weight, and tolerances as needed
Proper specification prevents over-spending on unnecessary features and ensures adequate performance for your environment. When in doubt, consult with your supplier's technical team to optimize specifications for your specific project.
