PRODUCT DATA SHEET
MW-BD- · REV 1 · Jul 2026
Insulation Mat & Board · Mineral Wool
Mineral Wool Board
BRAND: Johns ManvilleSKU FAMILY: MW-BD-5 STOCKED SIZES
Industrial mineral wool board insulation (8-pcf class) for vessels, tanks, ducts and flat/curved equipment to 1200°F.
AT A GLANCE
Max service temp1200°F
FormRigid board
Thickness range1"–4"; 24" and 36" widths
FacingNone
StandardASTM C612
Flame / smoke5 / 0 unfaced (ASTM E84 / UL 723)
TECHNICAL DATAPER MANUFACTURER
| Standard / specification | ASTM C612 Types IA–IVB |
| Thermal conductivity (k) | 0.23 @ 75°F (8-pcf board) |
| Density | 8 pcf (nominal) |
| Water-vapor sorption | <1% by wt (ASTM C1104) |
| Combustibility | Non-combustible per ASTM E136 |
APPLICATIONS
- Tanks and vessels
- Boiler walls and ducts
- Equipment lagging
- Acoustic panels
THERMAL CONDUCTIVITY — K VS. MEAN TEMPBTU·IN/HR·FT²·°F
| Mean °F | 75 | 200 | 300 | 400 | 500 |
|---|
| k value | 0.23 | 0.3 | 0.36 | 0.42 | 0.49 |
STOCKED SIZES & SKUS5 SIZES
| SKU | NOM. SIZE | WALL / 2ND |
|---|
| MW-BD-250-24 | 2.5" | 24" |
| MW-BD-4-24 | 4" | 24" |
| MW-BD-3-24 | 3" | 24" |
| MW-BD-100-8D | | |
| MW-BD-2-36 | 2" | 36" |
FEATURES
- Rated to 1200°F
- Non-combustible, 5/0 unfaced
- Water-repellent
- Easily cut with a knife
- Excellent acoustic absorption
PACKAGING & HANDLING
| Packaging | Cartoned boards |
| Handling & storage | Keep dry; store flat indoors |
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Data shown is nominal and per the manufacturer's published literature; verify against the current submittal and SDS before specifying. Sun City Energy Supplies stocks to spec, fabricates to size, and returns quotes the same business day. Informational only — not a warranty of fitness for a particular purpose.