METALTIS LEXICON

What does breaking strength (BS) mean? (ratchets)

The breaking strength is the maximum stress, expressed in kilograms, that a material can withstand without breaking. The numerical value of the breaking strength must always be twice the numerical value of the lashing capacity (LC), expressed in daN.

What is the working load limit or WLL? (lifting slings/round slings)

The term WLL stands for Working Load Limit, which refers to the maximum permitted load that can be lifted in a straight pull using means such as lifting slings and round slings. The WLL is expressed in metric tons and varies according to the lifting angle. To determine the effect of a certain angle on the WLL of your lifting strap, refer to the WLL summary, which can be found next to the product image for the lifting strap or round slings. The term Safe Working Load (SWL) is another, less-known term for WLL.

What does lashing capacity (LC) mean? (tie-down straps/ratchets)

LC (Lashing Capacity) stands for the maximum allowed force on the strap in a straight pull.

NOTE: The lashing capacity is not the same as the allowable weight of a load that can be safely secured with the lashing strap. The Lashing capacity is the starting point for calculating the number of cargo securing means (not breaking strength). The lashing capacity is expressed in daN (e.g., a lashing strap with a capacity of 2000 kg is designated LC 2000 daN). Each ratchet and the tie-down strap is always provided with an LC inscription or label.

What is the standard hand force (SHF)? (cargo securing)

Shf, or Standard Hand Force, is the manual force that a ratchet can apply to tighten a tie-down strap. The label of your tie-down strap indicates the maximum manual force that can be applied. For a 25mm width strap, the standard is 20 daN, and for all other straps, it is 50 daN.

In practice, when you apply a manual force of 50 daN on the ratchet, a force equal to the Stf (also listed on the label) works on the tensioned tie-down strap.

Please note that tie-down straps should only be tightened by hand. Using tools such as a rod to tighten the strap can increase the leverage effect and overload the tie-down strap.

What does standard tension Force STF mean? (tie-down straps)

STF stands for Standard Tension Force, which is a measurement of the force present in the strap after it has been tensioned using a ratchet with a force equal to the SHF (Standard Hand Force). The specific STF value can vary depending on the type of ratchet used, and it can range from 10 to 20% of the Lashing Capacity.

The label of your tie-down strap should feature the STF (Standard Tension Force) measurement as it is mandatory to indicate this value.

What is the coefficient of friction? (cargo securing)

The coefficient of friction is a number that represents the friction between two surfaces. Between two equal surfaces, the coefficient of friction will be the same. The symbol usually used for the coefficient of friction is μ.

The interaction between two different surfaces gives a different coefficient of friction.

For example:

Metal on metal: μ = 0,2
Metal on wood: μ = 0,4
Metal on anti-skid carpet: μ = 0,6

The higher the coefficient of friction, the better the cargo will be secured, and the less securing means you need to anchor your load.

What is ISO 9001?

ISO 9001 is the international standard for a company's quality management systems.

According to this standard, the company must:

• document the quality policy

• ensure that all employees are aware of this policy

• increase customer satisfaction by meeting their requirements

• comply with the legal requirements applicable to the organization's products and services

• control the business processes and be able to demonstrate this.

Metaltis collaborates with partner Tiscotex for the manufacturing of its straps. Tiscotex is ISO-certified for weaving, dyeing, and finishing straps.

Download the ISO 9001certificate in pdf format

What the RoHS guideline?

RoHS stands for "Restriction of Hazardous Substances" in English. RoHS is an EU directive that restricts the use of certain hazardous substances in electrical and electronic equipment. The hazardous substances that are to be banned include PB, Hg, Cd, hexavalent Cr (CR61), and the flame retardants PBB and PBDE. Some ratchets are coated with a zinc chromate coating or topcoat. Cr3-coated ratchets are compliant with the RoHS directive, but a CR6-coated ratchet is not. Certification or labeling is not mandatory under the RoHS directive.

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