DIN 2510 24CrMo5 1.7258 Stud Bolt
DIN 2510 Bolting components and connections with expansion shank are suitable for use at elevated temperatures with high pressure and with optimum Charpy Notch Impact strength for cryogenic applications.
DIN 2510 bolts, also known as double-end studs with reduced shank and thread lengths, feature a unique design tailored for demanding applications. With threads on both ends and reduced shank and thread lengths compared to standard bolts, DIN 2510 bolts offer enhanced strength and stability in critical assemblies.
DIN 2510 Part 3 Stud Bolts
Form / Type L, K, Z, KU, ZU
Dimensions Dia M6 – M200
Length: upto M56 – 1000mm or 1 meter long
Length: Above M64 – 2000mm or 2 meter long
DIN 2510 Part 4 Stud Bolt
Form / Type HP, HQ, HR, HS, GP, GQ, GR, GS
Dimensions Dia M6 – M200
Length: upto M56 – 1000mm or 1 meter long
Length: Above M64 – 2000mm or 2 meter long
Centre Heating hole for sizes M64 & above can be manufactured on request
24CrMo5 / 1.7258
24CrMo5 steel under consideration is characterized by a high percentage of chromium and molybdenum, which predetermines the increased performance of heat resistance of parts made of these steels.
Chemical composition of heat resisting and highly heat resisting materials for bolts and nuts (ladle analysis)
| Material | Chemical composition in % by wt. | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Code number | Material number | C | Si | Mn | I’ | S | Al | B | Cr | Mo | Ni | Ti | V | Others | |||
| maximum | |||||||||||||||||
| Standard grades | |||||||||||||||||
| 24CrMo5 | 1.7258 | 0,20 to 0,28 | 0,15 to 0,35 | 0,50 to 0,80 | 0,030 | 0,035 | 0,90 to 1,20 | 0,20 to 0,35 | |||||||||
| 1) Only usable for nuts. | |||||||||||||||||
| 2) Instead of bolts and nuts of this steel, it is possible for a transitional period to use also bolts and nuts of steels 24 CrMoV 5 5 (material number 1.7733) and 21 CrMoV 5 11 (material number 1.8070) (see Explanations). In special cases, it is possible also to use steel 21 CrMoNiV 4 7 (material number 1.6981) instead of this material | |||||||||||||||||
| 3) For this alloy, in all cases the values given in the latest issue of DIN 17 742 apply. | |||||||||||||||||
| 4) Lower silicon contents may be agreed at the time of ordering, in which case any resulting changes in the guaranteed properties must be taken into account. | |||||||||||||||||
Mechanical Properties
Guaranteed values for mechanical properties at room temperature of heat resisting and highly heat resisting materials for bolts and nuts (applies to longitudinal specimens)
| Material | Chemical composition in % by wt. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Code number | Material number | Condition 2) | Applicable for diameters mm |
Yield point or 0.2 % proof stress | Tensile strength N/mm2 |
Elongallon (L0 = 5 do) % min. |
Reduction in area % min. |
Absorbed DVM specimens J min. |
ISO V-notch specimens J min. |
Guidance value for normal upper limit of temperature of use in con- tinuous operation | |||||
| 24CrMo5 | 1.7258 | V | ≤ 100 | 440 | 600 to 750 | 18 | 60 | 103 | 118 | 400 | |||||
| > 100 ≤ 160 | 420 | 600 to 750 | 18 | 60 | 89 | 102 | 400 | ||||||||
STUD BOLT W/2 NUTS DIMENSIONS TO DIN 2510L/NF
SIZE M30X270 MAT. 21CRMOV57 FOR STUD AND 24CRMO5 FOR NUT
