🌐 Abrasive Standards Hub — Resource CenterContact Experts
Home›Resources

📦 Technical Resources & Downloads

Engineering tools, inspection checklists, specification templates, and reference guides for surface preparation professionals.

Free Downloads

Inspection & Specification Resources

📋

Standards Cross-Reference Table

Complete ISO / AMPP / SSPC / NACE / ASTM / SAE equivalency mapping with active standard designations and ISO equivalents. 25+ standards covered.

Format: PDF · 4 pages
View Online
✅

Pre-Blast Inspection Checklist

Comprehensive pre-blasting checklist: abrasive qualification (ASTM D4940), environmental conditions, equipment calibration, and substrate assessment per ISO 8501-1.

Format: Excel · 2 sheets
Request Download
📝

Post-Blast Inspection Checklist

Post-blast QC checklist covering cleanliness (ISO 8501-1), surface profile (ISO 8503), dust (ISO 8502-3), and chloride testing (ISO 8502-6/9) documentation.

Format: Excel · 3 sheets
Request Download
📄

Surface Preparation Specification Template

Master specification template for steel surface preparation: substrate requirements, cleanliness grade, surface profile, contamination limits, abrasive specification, and QC requirements.

Format: Word (.docx) · 8 pages
Request Download
📊

Surface Profile Achievement Chart

Visual chart: abrasive media (shot/grit type and size) vs. achievable Rz surface profiles in µm and mils. Covers SAE S- and G-sizes, copper slag, garnet, and aluminium oxide.

Format: PDF · 2 pages
Request Download
⚙️

Abrasive Selection Decision Matrix

Decision matrix for selecting the optimal abrasive: substrate type × coating system × service environment × equipment type. Covers metallic and non-metallic abrasives.

Format: PDF · 3 pages
Request Download
🧮

DFT & Spreading Rate Calculator

Wet film to dry film thickness calculator. WFT × VS% = DFT formula. Theoretical spreading rate (TSR) and coverage calculations per ASTM D1400 and SSPC-PA 2.

Format: Excel · interactive
Request Download
🔬

Test Method Quick-Reference Cards

One-page summaries: ASTM D4940, ISO 8502-6/9, ISO 8503-4, ASTM D4417, SSPC-PA 2. Equipment, procedure, calculation, and acceptance limits on a single A4 card each.

Format: PDF · 6 cards
Request Download
Technical Glossary

Key Terms & Definitions

Standardized terminology used in abrasive industry and surface preparation engineering.

Anchor Profile / Surface Profile
Peak-to-valley height of blast-cleaned surface roughness. Expressed as Rz (µm) or peak-to-valley height (mils). Critical for mechanical adhesion.
ISO 8503 · ASTM D4417
Blast Cleaning
Surface preparation by propelling abrasive particles at high velocity to remove contaminants, rust, and mill scale and impart a surface profile.
AMPP SP 5/6/7/10 · ISO 8501
Conductivity (Abrasive)
Electrical conductivity of abrasive water extract (µS/cm). Measures total ionic contamination. Typically ≤25–50 µS/cm for blast cleaning abrasives.
ASTM D4940 · ISO 11127-6
DFT (Dry Film Thickness)
Thickness of cured coating in µm or mils. Measured per SSPC-PA 2 / ISO 19840 using electromagnetic or eddy current gauges.
ASTM D7091 · ISO 2808
Mill Scale
Blue-gray oxide (Fe₃O₄) layer on hot-rolled steel. Cathodic to bare steel; causes rapid underfilm corrosion if not fully removed before protective coating.
ISO 8501-1
Near-White Metal (Sa 2½)
Blast cleaning grade allowing ≤5% staining per unit area. Most commonly specified for high-performance coating systems worldwide.
ISO 8501-1 · AMPP SP 10
Rz (Mean Peak-to-Valley Height)
Average of five highest peak-to-valley heights within consecutive sampling lengths. Primary surface roughness parameter in coating specifications. Rz ≈ 4–7× Ra.
ISO 4287 · ISO 8503-4
Soluble Salts / Ionic Contamination
Water-soluble contaminants (chlorides, sulfates, nitrates) causing osmotic blistering beneath coatings. Measured via Bresle extraction and conductimetric analysis.
ISO 8502-6 · ISO 8502-9
White Metal (Sa 3)
Highest blast cleaning grade. Surface completely free of all visible rust, mill scale, paint, and foreign matter. Uniform metallic appearance required.
ISO 8501-1 · AMPP SP 5
Grit
Angular metallic or non-metallic abrasive produced by crushing. Produces more angular surface profile than shot. Preferred for maximum mechanical adhesion of coatings.
ISO 11124 · SAE J444
Shot
Spherical or near-spherical metallic abrasive. Produces dimpled (peened) surface profile. Generally lower Rz than equivalent grit sizes.
ISO 11124 · SAE J827
Rust Grade
ISO 8501-1 initial classification of uncoated steel surface condition: Grade A (mill scale intact), B (mill scale deteriorating), C (rusted, pitting under magnification), D (heavily pitted).
ISO 8501-1
FAQ

Frequently Asked Technical Questions

What is the difference between ISO Sa 2½ and AMPP SP 10?+
ISO Sa 2½ and AMPP SP 10 (formerly NACE No. 2/SSPC-SP 10) are technically equivalent. Both define "near-white metal blast cleaning" — ≤5% staining per unit area. ISO Sa 2½ references ISO 8501-1 photographic standards; AMPP SP 10 references SSPC-VIS 1. The technical requirement is identical.
What maximum conductivity is acceptable for blast cleaning abrasives?+
ASTM D4940 specifies the test method but not acceptance limits. Common industry limits: ≤25 µS/cm for offshore/immersion; ≤50 µS/cm for general industrial atmospheric service. Always check the project specification — owner standards (Shell DEP, ExxonMobil GP, etc.) may specify stricter limits.
What surface profile is required for thermal spray aluminum (TSA) coating?+
TSA systems typically require Rz 60–100 µm (2.4–4.0 mils) achieved with angular grit (G-16 to G-25 SAE or equivalent angular steel grit per ISO 11124-2). Surface preparation must be Sa 3 (AMPP SP 5). Per AWS C2.23/NACE No. 12 and ISO 2063-1. TSA applied to inadequate profile shows significantly reduced pull-off adhesion.
What is the difference between Ra and Rz surface roughness?+
Ra is the arithmetic mean roughness (average absolute deviation from mean line). Rz is the mean peak-to-valley height — average of five highest peaks to five lowest valleys. Rz is more relevant to coating adhesion as it represents actual interlocking depth. For blast-cleaned steel: Rz/Ra ratio is approximately 4:1 to 7:1. Specifications should always reference Rz.
When should ISO 11124 be specified versus SAE J444?+
ISO 11124 for international/European/offshore projects; SAE J444 + SAE J827 + SSPC-AB 3 for North American projects. For global supply chains, specify ISO 11124 with SAE J444 cross-reference for maximum supplier flexibility. See our detailed comparison article: ISO 11124 vs SAE J444.
How many Bresle patch readings are required per project?+
ISO 8502-6 does not specify a minimum number of readings — this is set by the project specification. Common requirements: 1 reading per 50–100 m² of prepared surface; additional readings in areas of suspected higher contamination (welds, crevices, drainage paths). All readings must be taken before the coating is applied.

Get Resources Delivered

New checklists, templates, and technical guides — delivered to your inbox monthly.

No spam · Unsubscribe anytime