AD 2000 Merkblatt W7

Round Bars 10–500 mm
Hex Bars 15–50 mm

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Conforms with , , , , , , , , , , , , ,

Material properties: Tensile Strength 700–850 MPa, Yield Strength 550–1 MPa, Working temperature 0–550 °C

Equivalent or similar: 20CDV5-07, CSN 15320.5, CSN 15320.6, 24CrMoV, 25KH1M1F, 25KH1MF

For the manufacture of steam turbine bolts, nuts, studs, spindles, bushes and other components.

Round Bars 10–180 mm
Hex Bars 18–36 mm

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Conforms with , ,

Material properties: Tensile Strength 600–750 MPa, Yield Strength 440– MPa, Working temperature 60– °C

Equivalent or similar: Similar chemical composition with 42CrMo4+QT and SA 193-B7/SA320-L7 but with lowest Carbon content and lowest Tensile Strenght. AISI 4130, SS2225, GOST 20KHM, 30KHM, 30KHMA, G25CrMo4, 1.7258 / 24CrMo5, 1.7219 / 26CrMo4 Mechanical conform with DIN EN 898-1 grade 5.6 and DIN EN 898-2 grade 5.0

Usualy used for high and low temperutare bolting. Charpy RT min 60J

Round Bars 10.72–120 mm
Hex Bars 22–55 mm

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Conforms with

Material properties: Tensile Strength 860–1060 MPa, Yield Strength 730– MPa, Working temperature -100–450 °C

Equivalent or similar: SA 193-B7, SA320-L7, AISI 4140, SCM440H, 42CD4, 708M40, SS2244, GOST 35KHM, 38KHM, DIN EN 898-1 class 8.8 and DIN EN 898-2 class 8.0