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Factory technical data library

Reference grade tables transcribed from the supplied coke-oven and glass-industry technical catalogues, organized for buyer comparison.

How to use these tables

These are historical factory-supplied reference values, not automatic guarantees for a new order. Current availability, grade designation, test method, guaranteed limits, dimensions and inspection scope are confirmed in the quotation and contract.

FACTORY-SUPPLIED REFERENCE DATA

Silica bricks for glass kilns

Conventional BG grades plus a zero-expansion reference

Property / limit	BG-95	BG-96B	BG-96A	LBG-97	LBG-98	Zero expansion
SiO₂, wt% min.	95	96	96	97	98	99
Fe₂O₃, wt% max.	1.2	1.0	0.8	0.8	0.8	0.3
Flux index, max.	0.7	0.6	0.5	0.4	0.35	0.4
RUL, 0.2 MPa start temperature, °C min.	1660	1670	1680	1685	1690	1650
Apparent porosity, % max.	22	22	22	22	22	22
Cold crushing strength, MPa min. (<20 kg unit)	35	35	35	35	35	35
Cold crushing strength, MPa min. (≥20 kg unit)	30	30	30	30	30	30
True density, g/cm³ max.	2.35	2.34	2.34	2.34	2.34	2.34
Thermal shock, water-cooled at 1100°C, cycles	—	—	—	—	—	≥30

Source: Factory-supplied Refractories for the Glass Industry catalogue, physical and chemical specification table. Parenthesized values and special test conditions are retained from the supplied table.

FACTORY-SUPPLIED REFERENCE DATA

High-thermal-conductivity silica brick for coke ovens

Comparison with ordinary coke-oven silica brick

Property / limit	High-conductivity silica	Ordinary wall silica	Other ordinary silica
Apparent porosity, % max.	20	22	24
True density, g/cm³ max.	2.33	2.33	2.34
Cold crushing strength, MPa min.	40	40	35
RUL, 0.2 MPa × 0.6%, °C min.	1650	1650	1650
Thermal conductivity at 1100°C, W/(m·K) min.	2.30	1.9	1.9
Thermal expansion at 1000°C, % max.	1.25	1.28	1.30
Permanent linear change at 1450°C × 2 h, %	0–0.2	0–0.2	—
Residual quartz, % max.	1.0	1.0	—
SiO₂, wt% min.	94.5	94.5	94.5
Al₂O₃ / Fe₂O₃ / CaO, wt% max.	1.5 / 1.5 / 2.5	1.5 / 1.5 / 2.5	1.5 / 1.5 / 2.5

Source: Factory-supplied large coke-oven technical catalogue, high-thermal-conductivity silica brick comparison table. Parenthesized values and special test conditions are retained from the supplied table.

FACTORY-SUPPLIED REFERENCE DATA

Zero-expansion silica bricks for coke-oven repair

FS-97, FS-98 and FS-99 reference grades

Property / limit	FS-97	FS-98	FS-99
SiO₂, wt% min.	97	98	98.5
Al₂O₃, wt% max.	0.5	0.3	0.2
Fe₂O₃, wt% max.	0.8	0.5	0.3
Bulk density, g/cm³ min.	1.75	1.80	1.85
Apparent porosity, % max.	22	20	18
Cold crushing strength, MPa min.	25	30	35
RUL, 0.2 MPa, °C min.	1500	1600	1650
Thermal expansion at 1000°C, % max.	0.3	0.2	0.15
Thermal shock, 1100°C water-cooling, cycles min.	30	30	30

Source: Factory-supplied large coke-oven technical catalogue, zero-expansion silica brick index table. Parenthesized values and special test conditions are retained from the supplied table.

FACTORY-SUPPLIED REFERENCE DATA

Direct-bonded magnesia-chrome and magnesia-forsterite bricks

Five factory catalogue grades

Property / limit	LZMGe-8B	LZMGe-12B	DMC-12	LMG-60A	LMG-60B
MgO, wt% min.	70	65	60	60	60
Cr₂O₃, wt% min.	8	12	12	—	—
SiO₂, wt% max.	2.5	2.5	3.2 (1.8)	20	20
RUL, 0.2 MPa start temperature, °C min.	1700	1700	1580 (1650)	1650	1600
Apparent porosity, % max.	18	18	19 (18)	20	21
Cold crushing strength, MPa min.	40	40	35 (40)	40	35
Bulk density, g/cm³ min.	—	—	3.0	—	—
Thermal shock, water-cooled at 950°C, cycles	Data by agreement	Data by agreement	4	3 at 1100°C	3 at 1100°C

Source: Factory-supplied Refractories for the Glass Industry catalogue, physical and chemical specification table. Parenthesized values and special test conditions are retained from the supplied table.

FACTORY-SUPPLIED REFERENCE DATA

Magnesia-alumina and magnesia-alumina-spinel bricks

ML and LMLJ catalogue grades

Property / limit	ML-80A	ML-80B	LMLJ-80	LMLJ-75
MgO, wt% min.	80	80	80	75
Al₂O₃, wt%	5–10	5–10	8–15	8–15
Apparent porosity, % max.	18	20	17	19
RUL, 0.2 MPa start temperature, °C min.	1600	1580	1700	1650
Cold crushing strength, MPa min.	35	40	40	40
Thermal shock, water-cooled at 1100°C, cycles min.	4	4	15	10

Source: Factory-supplied Refractories for the Glass Industry catalogue, physical and chemical specification table. Parenthesized values and special test conditions are retained from the supplied table.

FACTORY-SUPPLIED REFERENCE DATA

High-purity magnesia, magnesia-zirconia and fused-rebonded magnesia bricks

LMZ, LMG and LDM catalogue grades

Property / limit	LMZ-97	LMZ-95	LMG-75	LDM-97	LDM-95
MgO, wt% min.	96.5	95	75	96.5	95
SiO₂, wt% max.	1.5	2.5	8	1.5	2.0
ZrO₂, wt%	—	—	12	—	—
RUL, 0.2 MPa start temperature, °C min.	1700	1650	1680	1700	1700
Apparent porosity, % max.	18	18	18	16	16
Cold crushing strength, MPa min.	50	50	45	45	45
Bulk density, g/cm³ min.	2.95	2.9	3.1	—	—
Thermal shock, water-cooled at 1100°C, cycles min.	—	—	10	—	—

Source: Factory-supplied Refractories for the Glass Industry catalogue, physical and chemical specification table. Parenthesized values and special test conditions are retained from the supplied table.

FACTORY-SUPPLIED REFERENCE DATA

Silica mortar, zirconia ramming mass and hot-patching material

Unshaped glass-furnace reference grades

Property / limit	LBGN-94	LBGN-95	LBGN-96	LGD-60	LRB-1	LRB-2
Material family	Silica mortar	Silica mortar	Silica mortar	Zirconia ramming mass	Hot patching	Hot patching
SiO₂, wt% min.	94	95	96	3	90	—
Al₂O₃, wt% max.	1.0	1.0	0.6	—	—	—
Fe₂O₃, wt% max.	1.0	1.0	0.7	—	—	—
ZrO₂, wt%	—	—	—	60	—	45
Bond strength, MPa	0.8 at 1100°C	0.8 / 1.0	0.8 / 0.5	—	—	—
Adhesive time	2–3 min	1–3 min	1–3 min	—	—	—
Bulk density, g/cm³ min.	—	—	—	3.2	1.8	2.8
Cold crushing strength after 110°C × 24 h, MPa min.	—	—	—	50	35	40

Source: Factory-supplied Refractories for the Glass Industry catalogue, unshaped refractory specification table. Parenthesized values and special test conditions are retained from the supplied table.

Current specification

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