Standard PN-EN 10083-3:2008

The standard PN-EN 10083-3:2008 Steels for quenching and tempering - Part 3: Technical delivery conditions for alloy steels - was part of a series of standards for quenching and tempering steels, which also included:

  • PN-EN 10083-1: 2006 – “Steels for quenching and tempering – Part 1: General technical delivery conditions”
  • PN-EN 10083-2: 2006 – “Steels for quenching and tempering – Part 2: Technical delivery conditions for non-alloy steels”

The earlier version of this series was the standard PN-EN 10083-1+A1:1999 – “Steels for quenching and tempering – Technical delivery conditions for special steel products”, which was published on 16 November 1999 and withdrawn on 2 November 2006.

Even earlier, the PN-89/H-84030/04 standard was in force , which defined the requirements for alloy structural steels for heat treatment, such as the 45HN or 37HS grades.

Brief characteristics of steel grades included in the PN-EN 10083-3:2008 standard

  • 1.5530 / 20MnB5 – Manganese-boron structural steel, heat-treated, used in parts requiring high hardness and abrasion resistance, e.g. in agricultural machinery parts.
  • 1.5531 / 30MnB5 – Higher manganese and boron content than 20MnB5, which improves hardenability. Used in components subject to intense wear, such as plowshares and chisels.
  • 1.5532 / 38MnB5 – Even higher manganese content, greater strength and abrasion resistance, used in parts exposed to high dynamic loads.
  • 1.5815 / 35NiCr6 – Nickel-chromium steel used in parts requiring high strength and resistance to variable loads, e.g. drive shafts and gears.
  • 1.6510 / 39NiCrMo3 – Highly hardenable steel, used for shafts, axles and other parts of machines operating under high loads and variable torque.
  • 1.6580 / 30CrNiMo8 – Nickel-chromium-molybdenum steel with very good strength and impact resistance, used in the aviation, automotive and machinery industries.
  • 1.6582 / 34CrNiMo6 – It is characterized by high hardenability and impact resistance and is used in the production of highly loaded components such as connecting rods and crankshafts.
  • 1.6747 / 30NiCrMo16-6 – High-strength special steel used in the aerospace and automotive industries, resistant to high stresses.
  • 1.6773 / 36NiCrMo16 – Steel with high nickel and chromium content, providing high resistance to fatigue and dynamic loads, used in shafts and axles.
  • 1.7003 / 38Cr2 – Surface-hardened chrome steel, used in machine parts requiring high wear resistance.
  • 1.7006 / 46Cr2 – Steel with increased chromium content, ensuring good surface hardness after hardening, used for shafts and gears.
  • 1.7033 / 34Cr4 – Medium hardenability chrome steel, used in machine parts that require good mechanical strength.
  • 1.7034 / 37Cr4 – Similar to 34Cr4, but with slightly higher strength, used in axles, shafts and structural components.
  • 1.7035 / 41Cr4 – Chrome structural steel with good hardenability, used in components requiring high abrasion resistance.
  • 1.7037 / 34CrS4 – Variety 34Cr4 with the addition of sulfur, which improves machinability, used in parts requiring machining.
  • 1.7038 / 37CrS4 – Reinforced version of 37Cr4, better machinability due to the presence of sulfur, used in parts subject to turning and milling.
  • 1.7039 / 41CrS4 – Variety 41Cr4 with better machinability, used in shafts, axles and other parts requiring machining.
  • 1.7182 / 27MnCrB5-2 – Manganese-chromium-boron steel, used in parts requiring high abrasion resistance, e.g. agricultural tools.
  • 1.7185 / 33MnCrB5-2 – Steel similar to 27MnCrB5-2, but with a higher manganese content, which improves hardenability and strength.
  • 1.7189 / 39MnCrB6-2 – The strongest of the MnCrB group, used in structural elements exposed to high mechanical loads.
  • 1.7213 / 25CrMoS4 – Chromium-molybdenum steel with the addition of sulfur, improving machinability, used for shafts, pins and other structural elements.
  • 1.7218 / 25CrMo4 – High-strength chrome-molybdenum steel, used in automotive applications, e.g. for axles and crankshafts.
  • 1.7220 / 34CrMo4 – A more durable version of 25CrMo4, used in the aerospace and automotive industries, good fatigue resistance.
  • 1.7225 / 42CrMo4 – A popular structural steel with excellent strength and wear resistance, widely used in automotive and industrial machinery.
  • 1.7226 / 34CrMoS4 – Version 34CrMo4 with added sulfur, improving machinability, used in machined parts.
  • 1.7227 / 42CrMoS4 – Variety 42CrMo4 with better machinability due to the addition of sulfur, used in shafts and gears.
  • 1.7228 / 50CrMo4 – Steel with high hardness and abrasion resistance, used in structural elements exposed to extreme operating conditions.
  • 1.8159 / 51CrV4 – Chrome-vanadium spring steel, characterized by high elasticity and fatigue resistance, used in springs and suspension springs.

The introduction of the PN-EN 10083 series of standards was aimed at unifying and updating the technical standards for steels for thermal treatment, adapting them to European and international guidelines.

Currently, after the withdrawal of the PN-EN 10083-3:2008 standard, the applicable standard is the PN-EN ISO 683-2:2018-08 standard – “Steels for quenching and tempering – Part 2: Technical delivery conditions for alloy steels”, which continues the process of harmonization of standards for quenching and tempering steels.

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