Break-Away

Firewall Anchors

Several building codes now require masonry walls to be secured, but to break-away in the event of a fire. To accomplish this we offer our non-wire anchors to be manufactured from Rolled Strip Zinc Alloys. The physical and mechanical properties are listed below. The Rolled Strip Zinc Alloy is available in 1/8" or 16 gage.

 

Firewall anchors melt at 792 degrees and cannot be welded to steel. For conditions requiring welding, we suggest welding the #130 Weld-0n Channel Slot in plain steel or hotdip to the steel, and then use a channel slot anchor manufactured from the Zinc Alloy 710 material.

 

The majority of our non-wire anchors can be manufactured out of the zinc alloy material.

Below are some of the anchors commonly used as Firewall Anchors.

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  • Materials & Finishes

    Firewall Anchors:

    Rolled Strip Zinc Alloy 710.

    (Firewall alloy 1/8” and 16 gage only)

#134

#187

#189

Corrugated Channel Slot Anchor

Corrugated Brick Veneer Anchor with Hole

L-Type Column Anchors

#196

#274

#341-B

Corrugated Type Column Anchor

Screw-On Split-Bend Stone Anchor

L-Anchor with Hole and Slot

Chart below lists the physical and mechanical properties of the zinc strips and comparison to other metals

Rolled Strip

Zinc Alloy 710

Brass
70/30

D Q Steel
1008

Aluminum
3003

Copper
ETP

Stainless Steel
304

PHYSICAL PROPERTIES

Density (lbs/in3)

0.259

0.308

0.321

0.290

0.2894

0.099

Melting Point (°F)

792

1660

1949

2550

2730

1190

Coefficient of Thermal Expansion (micro inch/in/° F)

15.4

11.3

9.3

9.6

6.4

12.9

Electrical Conductivity (%IACS)

27

27

101

3.0

14.5

42

Thermal Conductivity (BTU/(hr)(ft²)(ft)(°F)

60.5

67.7

195.9

9.4

37

94.1

Specific Heat (68°F) BTU/lb/°F

0.096

0.090

0.092

0.12

0.115

0.213

Specific Gravity

7.18

8.47

8.89

7.9

7.9

2.74

MECHANICAL PROPERTIES

Tensile Strength (ksi)

21-28

48-80

32-57

50-90

38-50

16-29

% Elongation (in²")

30-45

8-65

6-45

0-40

35-45

4-30

Olsen Ductility (in.)

25-35

.10-.40

.10-.40

10-30

35-42

15-35

Hardness R (15T)

55-68

60-91

50-80

0-86

73-77

40-75

Shear Strength (ksi)

24-28

31-48

22-29

60-120

45-52

10-16

Yield Strength (ksi)

28

 

 

 

 

 

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