Quenched and tempered steels

Usage

Quenched and tempered steels are used for components subjected to high stresses where the combination of high strength, wear-resistance and toughness are particularly important. We supply high-grade steel as per EN 10083-2 as well as stainless steel according to EN 10083-1 and EN 10132-4, with also stand out for their high degree of purity. Typical applications are link plates, belt buckles, springs, steel caps for safety shoes, saw blades, knives and scissors. Boron-alloyed steel grades are available according to EN 10083-3 or rather the SZFG material sheets.

Quenching and tempering gives the materials their special properties. The user of these steel grades must make sure that his calculation, design and processing methods are appropriate for the material. Temperature control during quenching and tempering is essential to achieve the desired component properties, however, it must be matched to the respective application.

Steel grades C22 - 34CrMo4 are used both as hot strip and as input stock for cold rolling. Steel grades C67S, C75S and 51CrV4 are supplied as input stock for cold rolling. As the melting and hot-rolling conditions have an effect on further treatment at the customer, the customer should always state the intended use when placing an order.

Standards

Europe Material no. DE FR IT US JP FK1)
DIN EN ISO DIN NAF UNI SAE JIS G 4051,
683-1
683-2
683-3 		172003)
172043)		 35-5523)
37-502 		6403,
8893,
7356 		J 403,
J 404 		JIS G 5111
C22E2) 1.1151 C22 C 20 - 1023 S 20 C,
S 22 C 		A
C25 1.0406 C25 - - 1025 S 25 C A
C30 1.0528 - C 30 C30 1030 S 30 C B
C35 + C35E 1.1181 C35 C 35 C35 1035 S 35 C B
C40 + C40E 1.0511 C40 C 40 - 1038, 1040 S 40 C B
C45 + C45E 1.1191 C45 C 45 C45 1042, 1045 S 45 C B
C50 + C50E 1.0540 C50 C 50 - 1049, 1050 S 50 C B
C55 + C55E 1.0535 C55 C 55 C55 1055 S 55 C C
C60 + C60E 1.0601 C60 C 60 C60 1060 S 58 C C
34CrMo4 1.7220 34 Cr Mo 4 34 CD 4 34CrMo4 4130 SCM432 C
42CrMo4 1.7225 - 42 CD 4 42CrMo4 4140 SCM440 D
50CrMo4 1.7228 50CrMo4 50 CD 4 42CrMo4 4150 SCM445 D
EN 10132-4 DIN 172223) NFA 37-502, 35-571 UNI 3545 SAE J 403, J 404 JIS G 3311
C67S 1.1231 C 67 XC 68 - 1070 S 70 CM D
C75S 1.1248 C 75 XC 75 - 1074 - D
51CrV4 1.8159 50 Cr V 4 50 CV 4 50 CrV 4 6150 SUP 10 M D
58CrV42) 1.8161 - - - - - D
  1. FK = Tensile strength class, Dimensions
  2. special grade supplied in accordance with the relevant standard
  3. invalid standard

Chemical composition in percent by weight [%] (Heat analysis)

Grade C Si Mn P S Cr Ni Mo Cr + Mo + Ni
max. max. max. max.
C22E1) 0.17 - 0.24 max. 0.40 0.40 - 0.70 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
C251) 0.22 - 0.29 0.10 - 0.40 0.40 - 0.70 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
C301) 0.27 - 0.34 0.10 - 0.40 0.50 - 0.80 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
C351) 0.32 - 0.39 0.10 - 0.40 0.50 - 0.80 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
C401) 0.37 - 0.44 0.10 - 0.40 0.50 - 0.80 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
C451) 0.42 - 0.50 0.10 - 0.40 0.50 - 0.80 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
C501) 0.47 - 0.55 0.10 - 0.40 0.60 - 0.90 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
C551) 0.52 - 0.60 0.10 - 0.40 0.60 - 0.90 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
C601) 0.57 - 0.65 0.10 - 0.40 0.60 - 0.90 0.045 0.045 max. 0.40 0.4 max. 0.10 0.63
34CrMo4 0.30 - 0.37 0.10 - 0.40 0.60 - 0.90 0.025 0.035 0.90 - 1.20 - 0.15 - 0.30 -
42CrMo4 0.38 - 0.45 0.10 - 0.404) 0.60 - 0.90 0.025 0.035 0.90 - 1.20 - 0.15 - 0.30 -
50CrMo4 0.46 - 0.54 0.10 - 0.404) 0.50 - 0.80 0.025 0.035 0.90 - 1.20 - 0.15 - 0.30 -
C67S 0.65 - 0.73 0.15 - 0.35 0.60 - 0.90 0.025 0.025 max. 0.40 0.4 max. 0.10 0.63
C75S 0.70 - 0.80 0.15 - 0.35 0.60 - 0.90 0.025 0.025 max. 0.40 0.4 max. 0.10 0.63
51CrV42) 0.47 - 0.55 max. 0.40 0.70 - 1.10 0.025 0.025 0.90 - 1.20 0.4 max. 0.10 -
58CrV43) 0.55 - 0.62 max. 0.40 0.70 - 1.10 0.025 0.025 0.90 - 1.20 - - -
  1. For application purposes with highest requirements as to the degree of purity, we also supply steel grades C22E - C60E as per DIN EN 10083-1 (heat-treated steel – non alloy stainless steel) with P ≤ 0,025 % and S ≤ 0,35 %
  2. Steel grade 51CrV4 also contains 0.10 - 0.25 % V.
  3. Steel grade 58CrV4 also contains 0.10 - 0.20 % V.
  4. Steels may be supplied with lower Si content. In this case, other means must be used to calm the steels.

Mechanical properties in normalized condition

Grade Min. yield strength Tensile strength Min. total elongation1)
[MPa] [MPa] [%]
e ≤ 16 e > 16 e ≤ 16 e > 16 e ≤ 16 e > 16
C22E 240 210 min. 430 min. 410 24 25
C25 260 230 min. 470 min. 440 22 23
C30 280 250 min. 510 min. 480 20 21
C35 + C35E 300 270 min. 550 min. 520 18 19
C40 + C40E 320 290 min. 580 min. 550 16 17
C45 + C45E 340 305 min. 620 min. 580 14 16
C50 + C50E 355 320 min. 650 min. 610 12 14
C55 + C55E 370 330 min. 680 min. 640 11 12
C60 + C60E 380 340 min. 710 min. 670 10 11
34CrMo4 800 650 1000-1200 900-1100 11 12
42CrMo4 900 750 1100-1300 1000-1200 10 11
50CrMo4 900 750 1100-1300 1000-1200 9 10
C67S - - max. 6402) max. 6402) 162) 162)
C75S - - max. 6402) max. 6402) 152) 152)
51CrV4 510 - max. 7002) - 132) 132)
58CrV4 700 - 1000 - 1300 - 82) 53)
  1. e = Nominal thickness in mm
  2. Mechanical properties in cold-rolled and soft-annealed condition
  3. It applies for the nominal thickness e: 3 ≤ e ≤ 16: A5
  4. It applies A5

Evidence of the mechanical properties is obtained from simulated heat-treated samples.

Condition of delivery, scope of testing and certificate

The provisions of EN 10083-2, chapters 5.1.3 and 6 shall apply for delivery and inspection. All quenched and tempered steels are delivered in a hot-rolled and untreated condition.

Certificates according to DIN EN 10204 can be supplied as follows: IT, DUN, FAX, e-mail, paper.

Note

For application purposes with highest requirements as to the degree of purity, we also supply steel grades C22E - C60E as per DIN EN 10083-1 (heat-treated steel – non alloy stainless steel).

Further Information

Steel grades

Dimensions

Executions

Ordered weights and coil weights

Tolerances