EN 17285

Railway Composite Brake Blocks - Requirements

This test method establishes performance requirements and acceptance criteria for composite (non-asbestos) brake blocks used in freight wagon braking systems. It evaluates friction characteristics, thermal stability, wear resistance, and compatibility with brake disc or wheel surfaces under representative operational conditions. Freight operators and brake block manufacturers use this test to ensure component reliability and safe braking performance in heavy-duty rail transport. Accreditation is critical for laboratories conducting brake block qualification testing to provide independent verification of compliance with European technical specifications for freight wagon safety.

What it measures

  • Coefficient of friction under varied temperatures
  • Wear rate and durability characteristics
  • Thermal stability and fade resistance
  • Compatibility with disc or wheel materials
  • Dimensional stability and surface integrity
🇩🇪 DIN EN 16185-1 🇬🇧 BS EN 16185-1 🇫🇷 NF EN 16185-1 🇮🇹 UNI EN 16185-1 🇪🇸 UNE EN 16185-1 🇳🇱 NEN EN 16185-1 🇩🇪 DIN EN 13979-1 🇬🇧 BS EN 13979-1 🇫🇷 NF EN 13979-1 🇮🇹 UNI EN 13979-1 🇪🇸 UNE EN 13979-1 🇳🇱 NEN EN 13979-1
1,323 Accredited labs
15 Countries

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Leftfield Environmental

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UKAS 4707 Port Talbot, GB
(HSG 248) – 2021 LSOP6 based on HSG 248 (PCM) based on HSG 248
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Life Environmental Services

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UKAS 0610 Bishop's Stortford, GB
(HSG 248) – 2021 QSOP 01 based on HSG 248 (PCM) based on HSG 248 QSOP 03 based on HSG 248
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Life Environmental Services

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UKAS 0340 Bishop's Stortford, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004)
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Linsch Consultants

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UKAS 2432 Newport, GB
(HSG 248) – 2021 staining based on HSG 248
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Liverpool University Hospitals NHS Foundation Trust

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UKAS 9656 70 Pembroke Place, GB
accordance with (EN ISO 14644- BS EN ISO 14644-1:2015
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Logical Compliance

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UKAS 29622 Chelmsford, GB
(HSG 264, 2012)
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London Borough of Enfield

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UKAS 1119 Enfield, GB
staining based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248
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London Laboratories

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UKAS 9681 Hextable, GB
(HSG 248) – 2021 ASB04 based on HSG 248 (PCM) based on HSG 248
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Lucion Services

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UKAS 2569 Gateshead, GB
staining based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248 3492, ISO14966 and HSG 248 DIN EN 14629 + 3 more
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M E Broadstone Limited

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UKAS 0227 Poole, GB
Plain ring gauges (taper) Plain gap gauges (parallel) Plain plug gauges (taper) LENGTH ANGLE + 3 more
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MP Calibration Services

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UKAS 0228 Wimborne, GB
Plain plug gauges (parallel) length bars) LENGTH (continued) Micrometers (enzephalomyopathische Form + 3 more
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MS Laboratories

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UKAS 1625 Wellingborough, GB
on BS 4401:Part 3:1970(1986) ISO 936:1998 BS ISO 21528-2:2017 BS ISO 16649-2:2001 ISO 6888-1 + 3 more
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MSS Consulting

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UKAS 0199 Galdames Place, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004) Appendix 3 of HSG 227 (2004) (HSG 248) – 2021 (PCM) based on HSG 248 + 1 more
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Marfleet Microbiology

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UKAS 28563 Driffield, GB
ISO 6579-1 ISO 21528-2 ISO 16649-2 TP/007 based on BS ISO ISO 11290-2 + 3 more
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Metrology and Quality Services

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UKAS 0373 Coventry, GB
tungsten carbide) Plain ring gauges (taper) Straight edges LENGTH (cont’d) Squares + 3 more
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Micron Analytical

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UKAS 4007 Scunthorpe, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Micron Analytical

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UKAS 0405 Scunthorpe, GB
(HSG 264, 2012)
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Microtech Services (Wessex)

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UKAS 1899 Bournemouth, GB
ISO 7251 # = 100 A ISO 6888-3 1) A:2b based on ISO 4833-2:2013 Amd 1:2 2) A:6c based on ISO 21528-1:2017 by mos + 1 more
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Mitie Environmental Services

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UKAS 0317 Derby, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004))
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NSF Wales Limited

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UKAS 0626 Newport, GB
BS EN ISO 7686:2005 DIN EN 997 DIN EN 13079 DIN ISO 10381-7 DIN EN 14622 + 3 more
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Nature’s Consultancy

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UKAS 10460 Romford, GB
(HSG 248) – 2021 (PCM) based on HSG 248 DOC/002 based on HSG 248)
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Nichol & Clarke Environmental Services

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UKAS 32076 Clervaux Terrace, GB
(HSG 264, 2012)
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Normec DETS

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UKAS 2139 Consett, GB
BS 1377: Part 2: 1990 DIN EN 12457 No DETSC 5012 based on BS EN staining based on HSG 248. (HSG 248) – 2021 + 1 more
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North Star Environmental

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UKAS 7691 Shotton, GB
(HSG 248) – 2021 NSDOC 47 based on HSG 248 staining based on HSG 248. (PCM) based on HSG 248
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Not One Iota

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UKAS 8998 Portadown, GB
(HSG 248) – 2021 SOP-12, based on HSG 248 staining based on HSG 248 (PCM) based on HSG 248
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Industries

Freight wagon operators Brake block manufacturers Brake system component suppliers Rolling stock maintenance providers Railway type-approval bodies

Related Standards

  • EN 16185-1 Railway applications - Brake friction pairs - Part 1: Friction behaviour assessment and acceptance criteria
  • EN 13979-1 Railway applications - Braking systems - Part 1: General requirements and definitions
  • EN 16834 Railway applications - Adhesion under braking and traction conditions

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