Thermal behavior
Low thermal conductivity and low heat storage are described in the catalog; no project-specific energy saving is claimed.
Product representative / Insulating firebricks
FJM insulating firebricks
Explore the FJM family, shapes and supplied catalog reference data. Current technical specifications are pending confirmation.
Product representative
A family of lightweight insulation bricks
The supplied catalog describes FJM insulating firebricks made from refractory powders, formed by casting, extrusion or foaming, then fired, ground to dimensions and packed.
The family is presented through standard bricks, arches, larger blocks and shaped components. This page keeps those catalog descriptions separate from current production ownership, availability or order commitments.
- Material behavior is grade-dependent; the family name alone is not a specification.
- Drawings and dimensions are part of the inquiry, not inferred from a reference photograph.
Product representative
What the catalog describes
The source groups the product characteristics around thermal conductivity, heat storage, linear change, purity, strength and dimensional accuracy. These are source descriptions to check against a current grade-specific TDS.
Dimensional control
Ground dimensions and straight, arch, block or custom shapes are described; actual tolerances must be agreed.
Composition and purity
Iron, alkali and other chemistry data vary by grade; source values are reproduced below rather than generalized across the family.
Mechanical and thermal stability
Strength and permanent linear change are separate material-selection questions. Current design limits are not established by a catalog image.
Product representative
Read the grades as distinct options
Catalog B distinguishes FJM23L, FJM23, FJM25, FJM26L, FJM26, FJM26-60 and FJM26H, followed by FJM28, FJM30, FJM30S and FJM32.
Its descriptions position FJM25 between grades 23 and 26, FJM26-60 as a higher-alumina specialty option, FJM26H for a hanging-roof context, and FJM30S for a hot-blast-stove context. These source descriptions do not approve a grade for your operating conditions.
- Confirm the exact grade suffix; FJM26, FJM26L, FJM26-60 and FJM26H are not interchangeable names.
- Classification temperatures below retain the source label. They are not a confirmed continuous operating limit for a proposed installation.
Product representative
Application context and limits
The block section of the supplied catalog names glass-furnace sidewall and bottom insulation, port insulation and tin-bath roof insulation. It also lists ceramic roller, tunnel and pusher kilns and other industrial furnaces.
That block-family reference must not be treated as proof that every FJM grade or shape is suitable for every listed position. Temperature, atmosphere, cycling, load, joint design and drawing requirements still need project-specific confirmation.
Product representative
Historical catalog data — side by side
Historical catalog reference only. These are supplied-catalog values, not a current specification, test certificate or contractual guarantee. The two catalogs have not been ranked by filename or assumed date.
The grade suffixes, units, test-temperature rows and em dashes are retained. An em dash means the source provides no value; it does not mean zero.
The user approved parallel historical reference for this draft. No value has been silently selected as the current approved specification.
Swipe or scroll this table to compare grades. Units and source conditions are retained.
| Field / grade | Catalog A · p.6 | Catalog B · pp.7–8 |
|---|---|---|
| FJM32 cold crushing strength | 3.8 MPa | 4.5 MPa |
| FJM25 Al₂O₃ | 45% | 50% |
| FJM23 modulus of rupture | 1.1 MPa | 0.9 MPa |
| FJM28 linear change | −0.5% at 1500°C × 12 h | −0.8% at 1510°C × 12 h |
Source: Both supplied catalogs; parallel-reference treatment explicitly approved for this draft.. Historical reference only; not an approved current specification.
Swipe or scroll this table to compare grades. Units and source conditions are retained.
| Property | Unit | FJM-23 | FJM-25 | FJM-26 | FJM-28 | FJM-30 | FJM-32 |
|---|---|---|---|---|---|---|---|
| Classification temperature | °C | 1260 | 1350 | 1430 | 1540 | 1600 | 1650 |
| Bulk density | g/cm³ | 0.6 | 0.8 | 0.8 | 0.9 | 1 | 1.2 |
| Cold crushing strength | MPa | 1.6 | 1.8 | 2.5 | 2.8 | 3 | 3.8 |
| Modulus of rupture | MPa | 1.1 | 1.2 | 1.4 | 1.7 | 1.8 | 2 |
| Thermal expansion (test conditions not specified) | % | 0.7 | 0.7 | 0.7 | 0.6 | 0.9 | 1.1 |
| Permanent / reheating linear change | % | -0.2 | -0.5 | -0.3 | -0.5 | -0.5 | -0.7 |
| Linear-change test temperature × 12 h | °C × h | 1230 × 12 | 1350 × 12 | 1400 × 12 | 1500 × 12 | 1600 × 12 | 1650 × 12 |
| Thermal conductivity at 400°C | W/m·K | 0.19 | 0.21 | 0.21 | 0.3 | 0.4 | 0.43 |
| Thermal conductivity at 600°C | W/m·K | 0.23 | 0.27 | 0.27 | 0.32 | 0.42 | 0.5 |
| Thermal conductivity at 800°C | W/m·K | 0.24 | 0.3 | 0.3 | 0.35 | 0.44 | 0.51 |
| Thermal conductivity at 1000°C | W/m·K | 0.25 | 0.32 | 0.32 | 0.38 | 0.45 | 0.53 |
| Thermal conductivity at 1200°C | W/m·K | — | — | 0.35 | 0.39 | 0.47 | 0.55 |
| Al₂O₃ | % | 42 | 45 | 55 | 65 | 72 | 75 |
| SiO₂ | % | 54 | 51 | 41.5 | 32.3 | 25.7 | 23 |
| Fe₂O₃ | % | 0.8 | 0.9 | 0.8 | 0.6 | 0.5 | 0.4 |
| TiO₂ | % | 1.2 | 1.3 | 1 | 0.7 | 0.7 | 0.6 |
| CaO + MgO | % | 0.7 | 0.7 | 0.7 | 0.5 | 0.3 | 0.3 |
| Na₂O + K₂O | % | 1.3 | 1.1 | 1 | 0.9 | 0.8 | 0.7 |
Source: Firebird E-catalog.pdf, p.6. Historical reference only; not an approved current specification.
Swipe or scroll this table to compare grades. Units and source conditions are retained.
| Property | Unit | FJM23L | FJM23 | FJM25 | FJM26L | FJM26 | FJM26-60 | FJM26H |
|---|---|---|---|---|---|---|---|---|
| Classification temperature | °C | 1260 | 1260 | 1350 | 1430 | 1430 | 1430 | 1430 |
| Bulk density | g/cm³ | 0.5 | 0.6 | 0.8 | 0.7 | 0.8 | 0.8 | 0.9 |
| Cold crushing strength | MPa | 1.2 | 1.6 | 2 | 1.8 | 2.5 | 2.4 | 2.8 |
| Modulus of rupture | MPa | 0.7 | 0.9 | 1.2 | 1 | 1.4 | 1.3 | 1.5 |
| Permanent / reheating linear change | % | -0.3 | -0.2 | -0.5 | -0.9 | -0.4 | -0.2 | -0.2 |
| Linear-change test temperature × 12 h | °C × h | 1230 × 12 | 1230 × 12 | 1350 × 12 | 1400 × 12 | 1400 × 12 | 1400 × 12 | 1400 × 12 |
| Thermal conductivity at 400°C | W/m·K | 0.17 | 0.19 | 0.21 | 0.2 | 0.21 | 0.23 | 0.3 |
| Thermal conductivity at 600°C | W/m·K | 0.19 | 0.23 | 0.27 | 0.25 | 0.27 | 0.28 | 0.32 |
| Thermal conductivity at 800°C | W/m·K | 0.22 | 0.24 | 0.3 | 0.28 | 0.3 | 0.31 | 0.35 |
| Thermal conductivity at 1000°C | W/m·K | 0.24 | 0.25 | 0.32 | 0.3 | 0.32 | 0.33 | 0.38 |
| Thermal conductivity at 1200°C | W/m·K | — | — | — | 0.34 | 0.35 | 0.36 | 0.39 |
| Al₂O₃ | % | 42 | 42 | 50 | 54 | 55 | 60 | 62 |
| SiO₂ | % | 54 | 54 | 46 | 42.5 | 41.5 | 37 | 37 |
| Fe₂O₃ | % | 0.8 | 0.8 | 0.9 | 0.8 | 0.8 | 0.7 | 0.7 |
| TiO₂ | % | 1.2 | 1.2 | 1.3 | 1 | 1 | 0.7 | 0.7 |
| CaO + MgO | % | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.5 | 0.5 |
| Na₂O + K₂O | % | 1.3 | 1.3 | 1.1 | 1 | 1 | 1.2 | 1.2 |
Source: Firebird New Material Catalog -.pdf, p.7. Historical reference only; not an approved current specification.
Swipe or scroll this table to compare grades. Units and source conditions are retained.
| Property | Unit | FJM28 | FJM30 | FJM30S | FJM32 |
|---|---|---|---|---|---|
| Classification temperature | °C | 1540 | 1600 | 1600 | 1650 |
| Bulk density | g/cm³ | 0.9 | 1 | 1 | 1.2 |
| Cold crushing strength | MPa | 2.8 | 3 | 4.5 | 4.5 |
| Modulus of rupture | MPa | 1.5 | 1.8 | 2 | 2.5 |
| Permanent / reheating linear change | % | -0.8 | -0.8 | -0.2 | -0.7 |
| Linear-change test temperature × 12 h | °C × h | 1510 × 12 | 1600 × 12 | 1600 × 12 | 1650 × 12 |
| Thermal conductivity at 400°C | W/m·K | 0.3 | 0.4 | 0.4 | 0.43 |
| Thermal conductivity at 600°C | W/m·K | 0.32 | 0.42 | 0.42 | 0.5 |
| Thermal conductivity at 800°C | W/m·K | 0.35 | 0.44 | 0.44 | 0.51 |
| Thermal conductivity at 1000°C | W/m·K | 0.38 | 0.45 | 0.45 | 0.53 |
| Thermal conductivity at 1200°C | W/m·K | 0.39 | 0.47 | 0.47 | 0.55 |
| Al₂O₃ | % | 65 | 72 | 64 | 75 |
| SiO₂ | % | 32.3 | 25.7 | 33.5 | 23 |
| Fe₂O₃ | % | 0.6 | 0.5 | 0.5 | 0.4 |
| TiO₂ | % | 0.7 | 0.7 | 0.7 | 0.6 |
| CaO + MgO | % | 0.5 | 0.3 | 0.3 | 0.3 |
| Na₂O + K₂O | % | 0.9 | 0.8 | 0.8 | 0.7 |
Source: Firebird New Material Catalog -.pdf, p.8. Historical reference only; not an approved current specification.
Product representative
What remains to be confirmed
A current signed or approved TDS has not been supplied. The catalog versions contain differences, including the examples above.
Confirm the grade, test method and conditions, physical dimensions, drawing, atmosphere, cycling and structural role before treating any value as an order requirement. No certificate, service-life promise, application guarantee or own-factory claim is made here.
Pending confirmation
- Current approved TDS and revision
- Application-specific selection and design limits
- Current shape, dimensions and tolerances
Product representative
Inspection and supporting evidence
The company process notes call for confirming the specification basis and discussing pre-shipment evidence: product and packing photos, labels, dimensional or appearance checks, loading photos and document lists.
These notes describe a discussion framework. A current batch report, certificate holder or test result for a future order is not present in the supplied package.
Pending confirmation
- Batch-specific test report
- Applicable certificate and holder, if required
Product representative
IFB pallet packing and loading references
The supplied IFB packing document describes the following eight protection stages. It allows the packing method to be adjusted to the customer’s request; the final arrangement must match the order.
The quantity workbook gives reference counts for a 1160 × 1100 mm pallet with height below 1100 mm. The packing PDF lists 20 pallets per 20GP and 40 per 40GP, subject to container maximum-weight restrictions. These references do not confirm the loading quantity or gross weight for a particular order.
The source storage note says outdoor storage should be covered and stacking is limited to four levels. Confirm the actual load, pallet condition and storage/handling requirements before using a stacking arrangement.
- 01
4-way entry pallet
Plywood or ISPM15 wooden pallet; the supplied reference gives a 1100 × 1160 mm footprint.
- 02
Moisture barrier at the base
Bottom plastic foil.
- 03
Base protection
Bottom corrugated cardboard.
- 04
Protection between brick layers
Neutral cardboard or EPE protective film between each layer.
- 05
Top reinforcement
Plywood or cardboard at the top.
- 06
Corner protection
Eight paper edge protectors, wood color or white.
- 07
Strapping
Five to seven plastic straps, green or black.
- 08
Outer moisture protection
Eight layers of stretch-wrap film.
Three source entries; the complete supplied first-sheet matrix is available below.
| Brick dimensions A × B × C (mm) | Pieces / pallet in source |
|---|---|
| 230 × 114 × 64 | 668 |
| 230 × 114 × 76 | 560 |
| 250 × 114 × 64 | 608 |
Source: Insulating Firebird Packing.xlsx, Sheet1!A5:T16 (C7, C8, C9). Reference pallet: 1160 × 1100 mm; the workbook specifies height below 1100 mm. Counts are not generalized to large tank-bottom blocks.
View the complete supplied IFB packing matrix
Column headers are B width in mm. Row labels show A length / C thickness in mm. Scroll horizontally to compare widths.
| A length / C thickness (mm) | 110 | 114 | 124 | 150 | 152 | 165 | 172 | 178 | 187 | 220 | 230 | 250 | 305 | 320 | 345 | 457 | 610 | 640 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 220 / 60 | 760 | - | - | - | - | 555 | - | - | - | 370 | - | - | - | - | - | - | - | - |
| 230 / 64 | 680 | 668 | 586 | 501 | 501 | 419 | 419 | 419 | 419 | 334 | 334 | 304 | 252 | 240 | 222 | 160 | 120 | 120 |
| 230 / 76 | 560 | 560 | 490 | 420 | 420 | 350 | 350 | 350 | 350 | 280 | 280 | 256 | 210 | 192 | 180 | 136 | 104 | 96 |
| 250 / 64 | 608 | 608 | 532 | 456 | 456 | 380 | 380 | 380 | 380 | 304 | 304 | 304 | 228 | 228 | 168 | 120 | 90 | 90 |
| 250 / 76 | 512 | 512 | 448 | 384 | 384 | 320 | 320 | 320 | 320 | 256 | 256 | 256 | 192 | 192 | 135 | 102 | 78 | 72 |
| 300 / 64 | 504 | 504 | 441 | 378 | 378 | 315 | 315 | 315 | 315 | 252 | 252 | 228 | 189 | 180 | 168 | 120 | 90 | 90 |
| 300 / 76 | 408 | 408 | 357 | 306 | 306 | 255 | 255 | 255 | 255 | 210 | 210 | 192 | 153 | 144 | 135 | 102 | 78 | 72 |
| 345 / 64 | 444 | 444 | 390 | 333 | 333 | 279 | 279 | 279 | 279 | 222 | 222 | 168 | 168 | 168 | 111 | 80 | 60 | 60 |
| 345 / 76 | 360 | 360 | 315 | 270 | 270 | 225 | 225 | 225 | 225 | 180 | 180 | 135 | 135 | 135 | 90 | 68 | 52 | 48 |
| 450 / 64 | 336 | 336 | 294 | 252 | 252 | 210 | 210 | 210 | 210 | 168 | 168 | 126 | 126 | 126 | 84 | 80 | 60 | 60 |
| 450 / 76 | 320 | 320 | 280 | 204 | 204 | 200 | 200 | 200 | 200 | 160 | 160 | 120 | 120 | 120 | 80 | 68 | 52 | 48 |
Source: Insulating Firebird Packing.xlsx, Sheet1!A5:T16. Source query values, not a shipment guarantee. A dash means no value is listed. Confirm dimensions, actual mass, arrangement, height and container weight limits.
Pending confirmation
- Order-specific packing and quantity confirmation
- Actual pallet gross mass, stacking and container weight limits
- Current packing revision and any customer-specific requirements
Product representative
Questions to settle before an order
Which catalog value should be used for a purchase specification?
Neither is automatically the current approved value. The supplied catalogs differ. Confirm the current grade-specific TDS and agreed test conditions before ordering.
Does the image identify a particular FJM grade?
No. It is a family-level catalog reference image. Exact grade and shape must be specified separately.
Are samples, MOQ and lead time confirmed?
No. State the material, quantity, drawing and destination in the inquiry. The current commercial and sample conditions remain pending.
Where are the certificates or real customer results?
No product-specific current certificate or authorized public customer result is supplied for this representative. Those items remain explicitly pending.
Product representative
Discuss an FJM requirement
Share the exact grade, drawing, operating conditions, quantity and destination. Flag any requirement that is not yet decided.