EN ISO 20345-2022 16 Key Changes in Safety Shoes Standards Compared to EN ISO 20345-2011 - An Ultimate Guide

16 key changes in Safety Shoes EN ISO 20345-2022

The new EN ISO 20345-2022 safety shoes standard has been implemented.

However, many people are not very clear about the changes between the EN ISO 20345-2022 standard and the EN ISO 20345-2011 standard.

This post explains 16 new rules that cover the new standard and changes to the old standard. It helps safety shoe makers and sellers understand the changes clearly.

What is the EN ISO 20345-2022 standard?

EN ISO 20345 is used to assess whether a product provides adequate protection against anticipated risks. This safety shoes standard specifies the basic and additional (optional) requirements for safety footwear intended for general use. EN ISO 20345 has been updated to the 2022 version on September 30, 2022.

When will the standard EN ISO 20345-2022 be implemented?

Safety shoes placed on the market after March 30, 2023, must be certified according to EN ISO 20345:2022.

The standard has a transition period until the end of 2027,

EN ISO20345-2011 unexpired certificates can continue to be used before the end of 2027

Now, I will introduce the differences between the new standard and the previous standard:

1: Added new classification of footwear

New clasification of footwear: Hybird footwear.

hybird footwear of en iso 2-345-2022

Zone white and Zone yellow can be connected using sewing, welding, or other methods. The strength of the connection must be a minimum of 10 N/mm.

The joint strength requirements for hybrid footwear have been added. The materials in Zone White and Zone Yellow can be connected by sewing/welding or other suitable methods, and the connection strength should reach 10 N/mm

ClassificationDescription
Class ⅠFootwear made from leather and other materials, excluding all-rubber or all-polymeric footwear ( See Figure 1)
ClassⅡAll-polymeric (i.e.entirely moulded) including all-rubber (i.e.entirly vulcanized) footwear (See Figure 2)
Hybird footwearSee 3.19 (See Figure)
The EN ISO 20345-2022 has 3 clasification of footwear

2: Changes in toe cap requirement

The previous standard was that the width of the curling “e” of the toe cap was 10mm

The new standard requirements are relaxed,

The main distinction is between the metal toe cap and the non-metal toe cap.

 The edge width of the curling “e” requirements of safety shoes metal toe caps

The main difference is the edge width of the curling “e” requirements of metal toe caps and non-metal toe caps:

metal toe caps ≤12mm

non-metal toe caps ≤15mm

The non-metal toe caps test environment has become simpler:

The previous standard environmental treatment required high and low temperature (60/45°C) and (-20/-6), and three environmental treatments of acid/alkali/oil.

The new standard has been changed to high and low temperatures (70/45°C) and (-20/-6°C), as well as oil environment treatment.

Impact test According to the type of toe cap material, two types of shoe inner gaps after impact can be selected:

  • Type A:Clearance≥19.5mm/21mm/22mm
  • Type B:Clearance≥23.5mm/25mm/26mm
  • Type B is a new and more demanding impact test,

The compression test was also modified accordingly, as was the impact test. also divided into type A or type B

3: Changes in slip-resistance requirements

The previous standard 3 Slip-resistance grade marks SRA/SRB/SRC were cancelledcanceled.

In the new standard, slip resistance no longer has a separate letter symbol in the certificate as it is a basic requirement. The test is equivalent to the former SRA test carried out on a ceramic tile coated in NaLS.

An additional feature is a test carried out on a ceramic tile with NaLS. This is marked with SR (= Slip Resistance) in the certificate.

When the heel slides forward, a coefficient of friction of >= 0.19 mm is allowed. When the front part of the shoe slides backward, a coefficient of friction of >= 0.22 mm is allowed.

The additional feature is not obligatory.

The change of the position of the test sole bottom, before testing the forward heel and forward flat of the safety shoes, now the test is changed to the first and the third phase of the bottom, the heel and the forefoot.

If slip resistance tests cannot be conducted on specialized shoes or boots (such as those with built-in studs), they will be labeled with the symbol Ø (= not tested).

Resistance to fuel oil (FO) is an additional feature,

Therefore, the new standard divides the slip resistance into three categories, namely SRA/SR/Ø.

4: Changes in midesole abrasion resistance

The previous standard was no serious damage after 400 cycles,

The new standard is changed to not less than 66% of the original thickness after 400 cycles (the minimum thickness is ≥ 2mm).

The new standard quantifies the definition of the previous standard to avoid deviation.

5: Changes in Puncture resistance test

The term ‘penetration resistance’ has changed to ‘puncture resistance’.

In the previous standard, all Puncture resistance inserts, or nail guards, are marked with the symbol P. The test is carried out with a Ø 4.5 mm nail.

In the new standard,

Mark “P” reserved, but only for safety shoes with metal Puncture resistance insert

For non-metal Puncture resistance insert, the marks changed and the protection class is differentiated according to the diameter of the test nail:

nail used in the test Ø 3.0 mm = PS

nail used in the test Ø 4.5 mm = PL

Nail for Puncture resistance test of EN ISO20345-2022 from h-tech safety footwear

6 Changes in heat insulation (HI) of sole complex

The HI test method is still with the temperature of the hotplate, Thp, at 150 °C, the temperature increases (final temperature, Tf, minus initial temperature, Ti) on the upper surface

of the insole after 30 min shall be not greater than 22 °C.

Added test failure criteria in the new standard:

Injection material delaminated

Visible deformation of the outsole due to any of the following:

Studs that join two or more soles due to melting of material

Reduce the stud height to less than half of the original height of the studs.

Melting of the studs and the outer side of the midsole became apparent, and visible deep cracks began to appear that affected half the thickness of the upper material.

Deformed or broken frontal areas appear on the upper.

7: Changes in waterproof and water resistance

In the previous standard, water resistance safety shoes’ upper material was marked with the WRU (Water Repellent Upper) symbol.

In the new standard, water resistance upper material is marked with the symbol WPA (Water Penetration and Absorption).

The waterproof feature is marked with WR (Water Resistance).

Non-functional decorative stitches and perforations are required to be free from safety shoes unless they meet waterproof requirements.

Added new waterproof footwear protection classes, S6 and S7,

S6 = S2 and WR

S7 = S3 and WR

8: Added new ladder grip test

This is a new feature that was not covered in previous versions of the norm. It is not a mandatory basic requirement but an optional test.

The ladder grip (LG) indicates whether a shoe is safe to wear when using ladders. The heel of the shoe prevents the foot from sliding through a rung, thus helping to prevent you falling from the ladder.

All materials in contact with ladder rungs shall meet the wear requirements given in 5.8.4;

The outsole should meet the requirements for non-slip outsole specified in the new standard;

en iso 20345-2022 ladder grip area specification

The stud height “d” in the waist area is at least 1.5 mm;

The outsole shall have a sloping chest heel; distance “a” from the waist area shall be at least 35mm, angle α shall be 90°-120°, and dimension “b” shall be at least 10mm.

9: Changes in water vapour permeability and coefficient

Added the new requirement :

If the area of non-moisture vapor permeable material is > 25%, the water vapour permeability test has failed.

Three levels:

  • If the area of the non-water vapor permeable material is 0%-10%, the water vapor permeable material should have a permeability ≥ 0.8mg/(cm2 · h), and a water vapor coefficient ≥ 15mg/cm2.
  • If the area of the non-water vapor permeable material is 10%-25%, the water vapor permeable material should have a permeability ≥ 2mg/(cm2 · h)
  • If the area of non-moisture vapor permeable material is > 25%, the air permeability test has failed.

10: Changes in ankle protection

Numerical changes to ankle protection requirements

en iso 20345-2022 ankle protection

The average  test results shall not exceed 20 kN and no single value shall exceed 15 kN.

The ankle area should have testing on at least the outside of the writing, testing on the inside is optional.

If the ankle protector is inside the shoe, it does not necessarily need a fixed shape, but it must meet the protection requirements under the 20344-2021, 5.21 test.

Previous safety shoes size of ankle protector
EN ISO 20345-2022 safety shoes standard, Minimum size of ankle protectors

11: Changes in insocks test

When insocks are tested in accordance with ISO 20344:2021, the wearing surface shall not develop any holes before the following number of cycles has been performed:

 25600 cycles when dry;

12800 cycles when wet.

Regarding the water absorption and water desorption of insoles, no test is required if the insoles are perforated.

12: Changes in test requirements for anti-penetration inserts

Metal penetration-resistant insert

In the previous standard: There are no more than 5 corrosion points, and the average area is no more than 2.5 mm2

In the new standard: There are no more than 3 corrosion points, and the average area is no more than 2 mm 

Non-metal anti-penetration inserts:

there are two test methods for NMAPI inserts, which stand for non-metal anti-penetration inserts, more commonly known as a composite insert or insole. Of these two test methods, the difference is the diameter of the nail used for the test, to represent different environments.

PL means the footwear was tested for general risks with a nail 4.5mm in diameter. After 4 tests, there were no perforations and the layers were detached during all tests.

PS means the footwear was tested with a nail 3mm in diameter, and is relevant for risks such as sewing needles or hypodermic needles. After 4 tests, the average value of the force required to perforate the outsole unit should not be less than 1100N, and the individual value should not be less than 150N.

13: Changes in PH value and chromium VI content

All the test requirements on PH value and Chromium VI content are called the harmless test of shoes, which is placed in EN ISO 20345-2022 5.3.6.

At the same time, the previous separate clauses on PH value and Chromium VI content in the upper/lining/tongue/sole were concaled.

14: Added metatarsal protection

Instep protection, also called metatarsal protection, added a new definition:

The metatarsal protector shall be made of suitable material and shall be of suitable shape so that the force acting on the sole during impact produces a protective toe cap and an area as large as the surface care of the foot.

A metatarsal protector fitted to a shoe should not be able to move without damaging the shoe.

On the medial side and metatarsal of the foot, the bone protector should fit the shape of the shoe.

Added requirement: The metatarsal protector should overlap the toe cap by at least 5mm and rest on the steel toe cap.

15: Added new scuff cap (SC)

Scuff cap (SC): In Martindale wear test to 8,000 cycles.

According to the test requirement:

The anti-abrasion toe cap shall not form any holes throughout the thickness.

16: Orthopaedic safety footwear

The new standard of orthopaedic safety footwear have 3 types:

Type 1: Footwear fitted with orthopaedic insoles.

Required tests for Type 1:

  • Protective toe cap
  • Insoles (tests for pH value, water permeability, water absorption and desorption, abrasion resistance, chromium VI)
  • Other tests depending on specified additional requirements (e.g. A, C, E, HI, CI, M)

Type 2: Safety shoes with an adapted outsole

Required tests for Type 2:

  • Separation force between the shoe upper and sole
  • Protective toe cap
  • Slip resistance
  • Outsole (tests for tear resistance, abrasion resistance, bending strength, hydrolysis resistance, and separating force between the layers on multi-layer shoes)
  • Other tests depending on specified additional requirements (e.g. SR, A, C, E, HI, CI, M, HRO, FO)

Required tests for Type 3:

They must meet all the basic requirements and the desired additional requirements.

Codes specification of EN ISO 20345-2022

PL – Perforation resistance (non-metal insert)
PS – Perforation resistance (non-metal insert)
C – Partly conductive footwear
A –  Anti-static footwear
HI – Heat insulation of outsole complex
CI – Cold insulation of outsole complex
E – Energy absorption of seat region
WR – Water resistance
M – Metatarsal protection
AN – Ankle protection
CR – Cut resistance
SC – Scuff cap abrasion
SR – Slip resistance (ceramic tile floor with glycerine)
WPA – Water penetration and absorption
HRO  – Resistance to hot contact
FO – Resistance to fuel oil
LG – Ladder grip

Short code of safety footwear—EN ISO20345-2022

At this point, you have gained a comprehensive understanding of the changes in CE ISO 20345-2022 compared to EN ISO 20345-2011.

H-tech safety footwear Short code of safety footwear—EN ISO20345-2-22 safety shoes standard.

Conclusion:

As an excellent supplier of safety shoes, Our production department and quality inspection department have started to execute orders according to safety shoes EN ISO 20345-2022 standard. Our laboratory has also passed SATRA’s latest EN ISO20345-2022 audit.

H-tech laboratory has also passed SATRA's latest EN ISO20345-2022 audit.

I am willing to discuss with you the standards, design, process, and production aspects of safety shoes. If you have any questions about safety shoes, please feel free to contact me (info@htech-footwear.com) and inquire about them.

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