XSTEELIA™ Catalyst for Steel Innovation
New zinc alloy plated steel wire with high corrosion resistance

TOUGH GUARD™ and its series line-up

What is TOUGH GUARD™?

Nippon Steel's newly-developed plated wire coated with three coating elements: zinc, aluminum and magnesium.

Characteristics

  • Holds about 5 times more corrosion resistance than the conventional zinc aluminum alloy.
  • Based on the corrosive loss evaluation by plate type in 5,000 hours of salt water spraying.

List of TOUGH GUARD™ series

Product name Plating technology Base material Plate surface Purpose of use
TOUGH GUARD™ FROST
TGF		 Three coating elements of zinc, aluminum and magnesium
*Common in TOUGH GUARD™ series		 Soft steel wire rod Rough Wire mesh for bank protection
TOUGH GUARD™ MILD
TGM		 Smooth Fence, etc.
TOUGH GUARD™ HARD
TGH		 Hard steel wire rod Power transmission/distribution lines, suspension wire for railway

What is TOUGH GUARD™ FROST (TGF)?

Developed exclusively for a base material of wire mesh for river bank protection.
This material prevents slippage with the rough surface using soft steel wire rod.

This product is sold by Nippon Steel.

What is TOUGH GUARD™ MILD (TGM)?

Excellent in bending workability and corrosion resistance in welding parts, this can be used for fences.
Soft steel wire rod is used and the surface has no rough coating.

This product is developed by Nippon Steel and manufactured and sold by NS Hokkai Seisen and Nichia Steel Works.

What is TOUGH GUARD™ HARD (TGH)?

Used mainly for railway, power transmission/distribution lines and communication fields.
Plated steel wires with high corrosion resistance and steel stranded wires using hard steel wire rod.

Nippon Steel and J-WITEX jointly developed TOUGH GUARD™ HARD based on the TOUGH GUARD™ technology of Nippon Steel.

Assumed purposes of use

Assumed purposes of use

Advantages of customers

  • 1

    Enables reduction of life cycle costs with the high corrosion resistance*

    • Data on high corrosion resistance is shown at the bottom of the page.
  • 2

    Longer life span and reduced costs are expected if replaced by other materials (resin, aluminum, stainless).

Corrosion resistance evaluation data

Corrosion resistance evaluation (salt water spraying test)

corrosive loss evaluation was conducted through the test based on JIS (Z2371 rule).
(See Table 1 for test conditions)

Salt water spraying test device
Table 1: Conditions for salt water spraying test Salt water concentration level 4.8～5.1％ PH 6.8～6.9 Amount sprayed 1.7～1.8ｌ/min Temperature 35℃

Evaluation results (relationship between the length of salt water spraying and corrosive loss)

Evaluation results (relationship between the length of salt water spraying and corrosive loss) Part1

Evaluation results (relationship between the length of salt water spraying and corrosive loss)

Evaluation results (relationship between the length of salt water spraying and corrosive loss) Part2
Table 2: Conditions for removing corrosive organisms (JIS Z2371) Solution 100g Ammonium acetate 1L distilled water Temperature70℃ Immersion length 5 minutes

This can be used for a wide range of purposes such as wire mesh, as it is excellent in corrosion resistance in bent and welded parts.

Results of salt water spraying test (3,000 hours)

×　Conventional method　Results of salt water spraying test (5,000 hours)[7 types of zinc plated steel wires]
○　TOUGH GUARD™ series　Spot welding sample Size 3.2mm、4.0mm、5.0mm、6.0mm

Results of salt water spraying test (5,000 hours)

TG-SST changes 1,000H / TG-SST changes 2,000H / TG-SST changes 3,000H / TG-SST changes 4,000H / TG-SST changes 5,000H / TG-SST changes 6,000H /TG-SST changes 7,000H