Preheater Anchor ISO 9001:2015 SSAB Hardox Authorized

Preheater Anchor

Heat-resistant stainless steel refractory anchors for cement plant preheaters and calciners. V-type, Y-type, and custom shapes for securing refractory brick and castable lining. Temperature rating up to 1100 C

Material 310S (S31008) / 253MA / 601 / 304 (S30408)

Service Temperature Up to 1100 C continuous

Wire Diameter 3-12 mm (custom sizes available)

Certification ISO 9001:2015 Certified

30+ Years of Manufacturing

500+ Global Clients

15 Days Lead Time

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Preheater Anchor – Material Specifications | ZHILI

Grade	UNS	Max Temp	Wire Dia	Key Feature	Application
310S	S31008	1100 C	3-12 mm	Excellent oxidation resistance, most widely used	Preheater brick anchors, calciner castable anchors
253MA	S30815	1100 C	4-10 mm	N + Ce strengthened, superior creep resistance	High-stress cyclones, expansion joints
601	N06601	1150 C	5-10 mm	Nickel alloy, best high-temp & corrosion resistance	Alternative fuel kiln zones, chemical attack areas
304	S30400	900 C	3-12 mm	Cost-effective, good formability	Top stage preheater, cooler zone, general use

Grade	UNS	C (%)	Cr (%)	Ni (%)	Si (%)	Mn (%)	Other
310S	S31008	<0.08	24.0-26.0	19.0-22.0	<1.50	<2.00	–
253MA	S30815	0.05-0.10	20.0-22.0	10.0-12.0	1.40-2.00	<0.80	N 0.14-0.20, Ce 0.03-0.08
601	N06601	<0.10	21.0-25.0	58.0-63.0	<0.50	<1.00	Al 1.00-1.70, Fe balance
304	S30400	<0.08	18.0-20.0	8.0-10.5	<1.00	<2.00	–

Grade	UNS	Tensile (MPa)	Yield (MPa)	Elong. (%)	Melting Range
310S	S31008	515 min	205 min	40	1399-1454 C
253MA	S30815	600 min	310 min	40	1370-1400 C
601	N06601	550 min	240 min	30	1301-1368 C
304	S30400	515 min	205 min	40	1400-1450 C

Selection Quick Reference

Standard preheater & calciner (up to 1100 C): 310S (S31008) — industry standard, 25Cr-20Ni for excellent oxidation resistance, available in V/Y/wavy custom shapes
High-stress zones with thermal cycling: 253MA (S30815) — N + Ce micro-alloyed for 40% higher creep strength at 1000 C vs 310S, ideal for expansion joint areas
Alternative fuel kilns / corrosion attack: Alloy 601 (N06601) — 60% Ni with Al addition for superior alkali/sulfur/chlorine resistance in co-processing environments
Top stage preheater / cooling zone: 304 (S30400) — cost-effective for <900 C zones with clean gas composition
All grades available in V-type, Y-type, wavy, cross-bar, and custom configurations with 3-12 mm wire diameter

Certifications & Authorizations

Quality you can verify. Partners you can trust.

National Invention Patent Certificate — Multi-hammer Sand Mold Casting Process — Luoyang Zhili ZL 2016 1 0056588.5

ISO 9001:2015 Quality Management System Certificate — Luoyang Zhili New Materials — GICG UK Certified IAF Accredited Valid until 2027

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Preheater Anchor – FAQ

Frequently Asked Questions

1 What anchor types and shapes are available, and how do I choose the right one? ▼

ZHILI manufactures six standard anchor configurations for cement plant refractory applications, each optimized for specific lining types and installation conditions:

V-type anchor: Simplest, most common design. Two legs bent at 45-60 degrees. Best for brick lining where anchors are welded to shell and embedded in mortar. Wire 5-8 mm for standard use.
Y-type anchor: Three-leg design for higher holding strength. Ideal for thick castable linings (50-150 mm) in cyclones and calciner roofs. 40% higher pull-out resistance vs V-type.
Wavy / sinusoidal: Continuous wave-form wire for large area coverage. Excellent for thin castable lining (25-50 mm) where maximum surface density is needed.
Cross-bar anchor: Double wire with welded cross bars. Heavy-duty option for thick refractory linings (100-250 mm) in high-stress areas.

V-Type (Brick)

5-8 mm wire

Y-Type (Castable)

6-10 mm wire

Wavy (Thin Lining)

3-5 mm wire

Cross-Bar (Thick)

8-12 mm wire

Not sure which type? Send us your lining specification (brick vs castable, thickness, area) and our technical team will recommend the optimal anchor type and density pattern.

2 Which material grade should I use for different preheater zones and temperatures? ▼

Material selection for refractory anchors depends on service temperature, gas composition, and whether the anchor is embedded in insulating or hot-face refractory. The metal temperature at the anchor tip is typically 100-200 C below the gas temperature due to the insulating effect of the refractory lining.

Stage 1-2 (<750 C gas)

304 (S30400)

Stage 3-4 (750-950 C)

310S (S31008)

Stage 5 / Calciner

253MA (S30815)

Alt Fuel Kilns

601 (N06601)

310S (S31008) is the standard choice for most preheater stages. 25Cr-20Ni provides excellent oxidation resistance up to 1100 C metal temperature.
Upgrade to 253MA (S30815) in the calciner and Stage 5 where thermal cycling is severe. The N+Ce micro-alloying increases creep strength by 40% at 1000 C.
Alloy 601 (N06601) for co-processing kilns: High Ni (60%) + Al (1.7%) forms a protective alumina scale that resists alkali, sulfur, and chlorine attack in alternative fuel environments.
Anchor tip temperature rule: For gas temperature X, estimate anchor metal temperature at X-150 C for hot-face mounted, X-250 C for mid-depth embedded anchors.

3 What is the recommended anchor spacing, and how many anchors do I need? ▼

Anchor spacing is critical for refractory lining integrity. Too few anchors = lining collapse; too many = excessive heat conduction through the shell. Here are field-proven density guidelines based on lining type and temperature zone:

Brick Lining

4-6 anchors/m2

Castable <100 mm

8-12 anchors/m2

Castable 100-200 mm

12-16 anchors/m2

Castable >200 mm

16-25 anchors/m2

Staggered pattern: Always install anchors in a staggered (diamond) pattern, not aligned rows. This distributes stress evenly and prevents straight-line crack propagation in the castable.
Edge spacing: Maintain 50-75 mm from lining edges and expansion joints. Anchors too close to edges cause corner spalling.
Roof/overhead areas: Increase density by 30-50% for overhead installations. Use Y-type anchors for better vertical holding.
Anchor tip position: Embed the anchor at 50-75% of lining thickness. Full-depth embedding wastes material and creates hot spots. Partial embedding at the hot face provides optimal support.

Quick calculation: Number of anchors = Area (m2) x Anchor Density. Example: 50 m2 cyclone roof at 20 anchors/m2 = 1,000 Y-type 253MA anchors. We can provide pre-packaged anchor kits for standard cyclone sizes.