{"id":2106,"date":"2025-06-13T06:39:00","date_gmt":"2025-06-13T06:39:00","guid":{"rendered":"https:\/\/qibrit.com\/innovare\/?page_id=2106"},"modified":"2025-06-13T22:28:46","modified_gmt":"2025-06-13T22:28:46","slug":"en-iso-11612","status":"publish","type":"page","link":"https:\/\/qibrit.com\/innovare\/en-iso-11612\/","title":{"rendered":"EN ISO 11612"},"content":{"rendered":"

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EN ISO 11612 \u2013 Protection Against Heat & Flame<\/strong><\/h4>\n

[\/vc_column_text][vc_column_text]Overview<\/strong>
\nEN ISO 11612 defines performance requirements for protective clothing and materials intended to shield workers from heat and flame hazards. This includes exposure to brief flame contact, convective and radiant heat, and splashes of molten metals like aluminum and iron. While commonly associated with garments, this standard is equally critical for fabrics and materials used in the manufacture of flame-retardant protective equipment. For manufacturers, achieving this certification demonstrates a material\u2019s ability to self-extinguish, resist flame spread, and offer a high level of thermal barrier, crucial in high-risk industrial sectors.<\/p>\n

Testing Methods & Minimum Performance Levels<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n
Test Method<\/strong><\/td>\nDescription<\/strong><\/td>\nRequirements<\/strong><\/td>\nMin. Performance Level<\/strong><\/td>\n<\/tr>\n
EN ISO 15025 <\/strong>Procedure A<\/td>\nSurface Flame Spread<\/em><\/strong>
\n<\/em>A small flame is applied to the surface of the fabric for 10 seconds.<\/td>\n		\n
    \n
  • Self-extinguish within 2 seconds after flame removal.<\/li>\n
  • Not produce flaming debris.<\/li>\n
  • Hole formation < 50 mm.<\/li>\n<\/ul>\n<\/td>\n
A1<\/strong><\/td>\n<\/tr>\n
EN ISO 15025 <\/strong>Procedure B<\/td>\nEdge Flame Spread<\/em><\/strong>
\n<\/strong>The flame is applied to the bottom edge of a vertically suspended fabric.<\/td>\n		\n
    \n
  • Self-extinguish within 2 seconds.<\/li>\n
  • Not burn the upper or vertical edge.<\/li>\n
  • Hole formation < 50 mm.<\/li>\n<\/ul>\n<\/td>\n
A2<\/strong><\/td>\n<\/tr>\n
EN ISO 9151<\/strong><\/td>\nConvective Heat<\/em><\/strong>
\nMeasures how long it takes heat to transfer through the material when exposed to direct flame.Classes: B1 to B3<\/td>\n		\n
    \n
  • Heat transmission factor (HTI) \u2265 4 seconds.<\/li>\n<\/ul>\n<\/td>\n
B1<\/strong><\/td>\n<\/tr>\n
EN ISO 6942<\/strong><\/td>\nRadiant Heat<\/em><\/strong>
\nDetermines the insulation performance against radiant heat sources.Classes: C1 to C4<\/td>\n		\n
    \n
  • Protective time \u2265 7 seconds at 20 kW\/m\u00b2 exposure.<\/li>\n<\/ul>\n<\/td>\n
C1<\/strong><\/td>\n<\/tr>\n
ISO 9185<\/strong><\/td>\nMolten Aluminum Splash<\/em><\/strong>
\nAssesses how much molten aluminum a fabric can resist without causing damage to a PVC film placed beneath.Classes: D1 to D3<\/td>\n		\n
    \n
  • Fabric resists at least 100 g of molten aluminum without penetration.<\/li>\n<\/ul>\n<\/td>\n
D1<\/strong><\/td>\n<\/tr>\n
ISO 9185<\/strong><\/td>\nMolten Iron Splash<\/em><\/strong>
\nTests resistance to molten iron (separate from aluminum).Classes: E1 to E3<\/td>\n		\n
    \n
  • Fabric resists at least 60 g of molten iron without PVC film damage.<\/li>\n<\/ul>\n<\/td>\n
E1<\/strong><\/td>\n<\/tr>\n
EN ISO 12127-1<\/strong><\/td>\nContact Heat<\/em><\/strong>
\nSimulates brief contact with a hot object (e.g. tools or surfaces).Classes: F1 to F3<\/td>\n		\n
    \n
  • At 250\u00b0C, material must delay temperature rise of 10\u00b0C for \u2265 5 seconds<\/li>\n<\/ul>\n<\/td>\n
F1<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Additional Mechanical & Dimensional Tests<\/strong><\/h4>\n

To ensure suitability for garment production and durability in harsh environments, certified fabrics should also pass the following tests:<\/p>\n\n\n\n\n\n\n\n\n
Test Method<\/strong><\/td>\nDescription<\/strong><\/td>\nRequirements<\/strong><\/td>\n<\/tr>\n
ISO 5077<\/strong><\/td>\nDimensional Stability to Washing<\/em><\/strong>
\nDetermines shrinkage or growth of the fabric after domestic laundering.<\/td>\n		\n
    \n
  • Shrinkage should not exceed \u00b13% (woven) and \u00b15% (knitted)<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
ISO 13934-1 <\/strong><\/td>\nTensile Strength (Strip Method)<\/em><\/strong>
\nMeasures the maximum force needed to break a strip of fabric in warp and weft directions.<\/td>\n		\n
    \n
  • Warp: \u2265 400 N | Weft: \u2265 400 N<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
ISO 13937-2 <\/strong><\/td>\nTear Strength (Wing Method)<\/em><\/strong><\/p>\n

Evaluates resistance to tearing using a trapezoidal-shaped cut and applying load to propagate it.<\/td>\n

\n
    \n
  • \u2265 20 N (warp and weft)<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
ISO 13938-1 <\/strong>Hydraulic Method<\/td>\nBursting Strength<\/em><\/strong>
\nDetermines pressure required to rupture fabric using a liquid (hydraulic) medium.<\/td>\n		\n
    \n
  • \u2265 200 kPa (hydraulic or pneumatic method depending on fabric type)<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
ISO 13938-2 <\/strong>Pneumatic Method<\/td>\nBursting Strength<\/em><\/strong>
\nSimilar to 13938-1 but uses compressed air (pneumatic pressure) instead of liquid.<\/td>\n		\n