Alloy Steels

100CrMo7-3 (High-Carbon Bearing Steel)

Bearing Steel

100CrMo7-3 -- Mo-bearing high-carbon chromium steel for large deep-groove bearings. Better hardenability than 100Cr6. Fo…

Tensile

— MPa

Hardness

— HB

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14NiCr14 (EN36 Deep Case Hardening)

High-Ni Case-Hardening Steel

14NiCr14 (EN36) -- high-Ni deep case-hardening steel. Case HRC 58-62, core Rm 1200-1400 MPa with outstanding impact toug…

Tensile

— MPa

Hardness

— HB

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15CrNi6

Ni-Cr Case-Hardening Steel

15CrNi6 — Ni-Cr case-hardening steel with excellent core toughness. For heavy-impact case-hardened components: mining ge…

Tensile

700–900 MPa

Hardness

197–255 HB

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15NiCrMo13 (Case-Hardening)

High-Alloy Case-Hardening Steel

15NiCrMo13 — highest-hardenability case-hardening steel. For very large gears and case-hardened components exceeding 100…

Tensile

— MPa

Hardness

— HB

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16MnCr5

Case-Hardening Alloy Steel

Mn-Cr case-hardening steel. Most widely used European gear steel for automotive transmission components.…

Tensile

650–800 MPa

Hardness

190–235 HB

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16MnCrS5 (Free-Machining Case-Hardening)

Free-Machining Case-Hardening Steel

16MnCrS5 — sulphur-bearing free-machining variant of 16MnCr5. Best machinability of standard case-hardening steels. For …

Tensile

— MPa

Hardness

— HB

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16NiCr4 (Light Case-Hardening Steel)

Case-Hardening Steel

16NiCr4 -- Ni-Cr case-hardening steel for smaller sections. Case HRC 58-62, core Rm 800-950 MPa. For pins, small shafts …

Tensile

— MPa

Hardness

— HB

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18CrNiMo7-6

Case-Hardening Alloy Steel

High-performance Ni-Cr-Mo case-hardening steel for wind turbine gearbox gears and heavily loaded industrial transmission…

Tensile

750–950 MPa

Hardness

218–265 HB

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20CrMo5 (Boron-free case-hardening)

Cr-Mo Case-Hardening Steel

20CrMo5 — Cr-Mo case-hardening steel. Good hardenability to 35 mm. For medium-size gears, shafts and case-hardened faste…

Tensile

— MPa

Hardness

— HB

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20MnCr5

Mn-Cr Case-Hardening Steel

Mn-Cr case-hardening steel with better hardenability than 16MnCr5. For medium-large gears, splined shafts and heavily lo…

Tensile

650–900 MPa

Hardness

190–248 HB

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20MnCrS5 (Free-Machining Case Hardening)

Free-Machining Case-Hardening Steel

20MnCrS5 -- sulphur-bearing free-machining version of 20MnCr5. Same case-hardening depth and core properties as the base…

Tensile

540–780 MPa

Hardness

155–215 HB

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21NiCrMo2 (AISI 8620)

Ni-Cr-Mo Case-Hardening Steel

AISI 8620 — triple-alloy case-hardening steel. Case HRC 58-62, core Rm 800-1000 MPa. The most widely used case-hardening…

Tensile

— MPa

Hardness

— HB

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21NiCrMo2 (Balanced Ni-Cr-Mo Case Hardening)

Case-Hardening Steel

21NiCrMo2 -- balanced light Ni-Cr-Mo case-hardening steel, positioned between 20NiCrMo2-2 and 16NiCr4 in alloy content. …

Tensile

560–800 MPa

Hardness

165–225 HB

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25CrMo4

Cr-Mo Alloy Steel

Cr-Mo alloy steel with good weldability for hydraulic tubing, aerospace structural tubing (AISI 4130) and cylinder walls…

Tensile

600–800 MPa

Hardness

175–235 HB

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25CrMoS4 (Free-Machining Cr-Mo)

Free-Machining Alloy Steel

25CrMoS4 -- sulphur-bearing free-machining version of 25CrMo4. Same Q+T properties + 25-35% faster machining on automati…

Tensile

— MPa

Hardness

— HB

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28NiCrMoV8-5 (Large Turbine Rotor Forging Steel)

Ultra-Large Forging Steel

28NiCrMoV8-5 -- Ni-Cr-Mo-V rotor forging steel for steam turbine and generator rotors. Rm 780-930 MPa with guaranteed th…

Tensile

780–930 MPa

Hardness

235–280 HB

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300M (Ultra High Strength Steel)

Ultra High Strength Steel

300M — 4340 modified with V+Si for Rm 1930-2070 MPa. The standard landing gear steel for large commercial aircraft. Bett…

Tensile

— MPa

Hardness

— HB

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30CrNiMo8

Ni-Cr-Mo Alloy Steel

High-alloy Ni-Cr-Mo steel for very large cross-sections requiring through-hardening. Large marine shafts, turbine rotors…

Tensile

820–1,020 MPa

Hardness

243–295 HB

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30NiCrMo16-6 (Ultra High Strength)

Ultra High Strength Steel

30NiCrMo16-6 -- ultra-high-strength Ni-Cr-Mo Q+T steel. Rm 1400-1700 MPa. For aircraft engine shafts, large racing crank…

Tensile

— MPa

Hardness

— HB

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31CrMoV9 (Nitriding Steel)

Nitriding Steel

Standard nitriding steel per EN 10085. After gas nitriding achieves HV 900-1100 surface hardness. For crankshafts, camsh…

Tensile

900–1,100 MPa

Hardness

270–330 HB

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32CrMoV12-10 (Nitriding Steel)

Nitriding Steel

32CrMoV12-10 -- premium nitriding steel. Surface HRC 65-70 after gas nitriding with virtually zero distortion. For crank…

Tensile

— MPa

Hardness

— HB

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34Cr4 (Basic Chromium Q+T Steel)

Cr Q+T Steel

34Cr4 -- basic Cr Q+T steel. Rm 800-1000 MPa. Lower cost than 42CrMo4. For bolts, shafts and small components requiring …

Tensile

— MPa

Hardness

— HB

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34CrAlNi7-10 (Nitriding Steel -- High Al, Deep Case)

Nitriding Steel

34CrAlNi7-10 -- high-Al nitriding steel giving the deepest standard nitrided case among common nitriding grades, with ad…

Tensile

950–1,150 MPa

Hardness

280–340 HB

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34CrMo4 (Cylinder Steel)

Cr-Mo Q+T Steel

34CrMo4 — Cr-Mo steel used worldwide for seamless gas cylinders (EN 1964) and high-pressure tubes. Rm 900-1100 MPa after…

Tensile

— MPa

Hardness

— HB

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34CrNiMo6

Ni-Cr-Mo Alloy Steel

High-strength Ni-Cr-Mo alloy steel with excellent toughness. For crankshafts, gear shafts, aerospace components (AISI 43…

Tensile

780–980 MPa

Hardness

229–285 HB

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36NiCrMo16

High-Alloy Q+T Steel

36NiCrMo16 — premium high-alloy Ni-Cr-Mo steel, Rm up to 1600 MPa. For high-performance racing components, aerospace sha…

Tensile

1,150–1,350 MPa

Hardness

335–400 HB

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36NiCrMo4 (AISI 4340)

Ni-Cr-Mo Q+T Steel

AISI 4340 — the reference high-strength structural steel. Rm 1000-1800 MPa. For aircraft landing gear, crankshafts, gear…

Tensile

— MPa

Hardness

— HB

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38MnVS6 (Microalloyed Forging Steel)

Microalloyed Forging Steel

38MnVS6 -- microalloyed (V+N) forging steel. Rm 900-1050 MPa as-forged without any heat treatment. For automotive cranks…

Tensile

— MPa

Hardness

— HB

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40NiCrMo2

Ni-Cr-Mo Q+T Steel

40NiCrMo2 — lower-alloy Ni-Cr-Mo steel. Q+T to 800-1000 MPa for sections to 50 mm. Economical alternative to 34CrNiMo6 f…

Tensile

— MPa

Hardness

— HB

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40NiCrMo8-4 (Heavy Q+T Steel)

Heavy Q+T Steel

40NiCrMo8-4 -- high-Ni Q+T for very large sections. Rm 1100-1300 MPa through-hardened in sections to 200 mm. For large m…

Tensile

— MPa

Hardness

— HB

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41Cr4

Cr Q+T Steel

41Cr4 — basic chromium Q+T steel. Good hardenability to 30 mm. For steering components, shafts and bolts where 42CrMo4 i…

Tensile

700–900 MPa

Hardness

207–265 HB

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42CrAlMo7 (Nitriding Steel Cr-Al-Mo)

Nitriding Steel

42CrAlMo7 -- Al-bearing gas nitriding steel. Surface HVC 900-1100 (HRC 65-70) -- highest nitride hardness of standard st…

Tensile

— MPa

Hardness

— HB

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42CrMo4

Cr-Mo Alloy Steel

Chromium-molybdenum alloy steel Q+T. Most widely used alloy steel in Europe. Excellent strength-toughness balance for sh…

Tensile

650–800 MPa

Hardness

196–241 HB

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50CrMo4

Cr-Mo Spring / Q+T Steel

High-carbon Cr-Mo steel. Highest strength in the EN 10083 Cr-Mo series. For heavy-duty springs, highly loaded bolts and …

Tensile

780–980 MPa

Hardness

225–285 HB

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51CrV4

Spring Alloy Steel

Chromium-vanadium spring steel with excellent fatigue strength. Standard European spring steel for coil, leaf and torsio…

Tensile

1,450–1,750 MPa

Hardness

430–510 HB

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55NiCrMoV7 (Forging Hammer Die Steel)

Hot Work Die Steel

55NiCrMoV7 -- Ni-Cr-Mo-V die steel for forging hammers and drop hammers. HRC 36-42 service. Outstanding toughness combin…

Tensile

— MPa

Hardness

— HB

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58CrV4 (Spring + Tool)

Cr-V Spring/Tool Steel

58CrV4 — Cr-V spring steel with better hardenability than 51CrV4. For heavy coil springs, torsion bars and high-stress s…

Tensile

— MPa

Hardness

— HB

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GS-20Mn5 (Structural Steel Casting)

Structural Steel Casting

GS-20Mn5 -- normalized weldable steel casting. Rm 450-620 MPa. For complex structural components produced as castings wh…

Tensile

— MPa

Hardness

— HB

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HY-80 (High-Yield Naval Steel)

High-Yield Naval Steel

HY-80 — quenched and tempered naval structural steel. Re>=552 MPa, outstanding toughness at -84 C. For submarine pressur…

Tensile

— MPa

Hardness

— HB

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X12NiCoMoTi18-8-5 (Maraging 250)

Maraging Steel

Maraging 250 -- lower-strength maraging steel grade. Rm 1700 MPa, better toughness than Grade 300. For structural aerosp…

Tensile

— MPa

Hardness

— HB

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X15NiCrMo3-1 (AISI 9310)

Ni-Cr-Mo Gear Steel

AISI 9310 — high-Ni carburising steel for the most demanding gears. Case HRC 59-63, core Rm 900-1100 MPa with outstandin…

Tensile

— MPa

Hardness

— HB

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X2CrNiMoN17-13-5 (317L)

Austenitic Stainless Steel

317L — high-Mo low-carbon austenitic stainless. Better pitting resistance than 316L (PRE~30). For severe chemical, bleac…

Tensile

515 MPa

Hardness

— HB

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X2NiCoMo18-9-5 (Maraging 300)

Maraging Steel

Maraging 300 — ultra-high-strength maraging steel. Rm 1900-2100 MPa after aging. No quench needed — age from solution-an…

Tensile

— MPa

Hardness

— HB

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