SCM415 | 15CrMo5 | 1.7262 | Carburizing Hardening Steel

Alloy Structural Steel SCM415 (or equivalent as JIS G4053-2003)

Characteristic and Applicable scope :

Has the good shop characteristics and the welding performance, in 500~550°C under has a high long-term strength. When the temperature surpasses 550°C, the oxidation resistance performance variation, the creep strength obviously reduces. When occupies for a long time 500~550 °C, the steel hot stubborn and unyielding person reduces, the intensity reduces. Uses in makes 510°C high, presses vapour drive pipe, collection box as well as pipe wall temperature for 550°C superheater and forging.

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Chemical Composition :

- Carbon C : 0.13~0.18
- Silicon Si :0.15~0.35
- Manganese Mn :0.60~0.90
- Sulfur S : Permits the remaining content ≤0.030
- Phosphorus P : Permits the remaining content ≤0.030
- Chromium Cr :0.90~1.20
- Nickel Ni : Permits remaining content ≤0.25 copper Cu: Permits the remaining content ≤0.030
- Molybdenum Mo :0.15~0.25

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Mechanical Properties :

- Tensile strength σb (MPa):≥440(45)
- Yield strength σs (MPa):≥295(30)
- Elongation ratio δ5 (%): ≥22
- Reduction of area Psi (%): ≥60
- Impact merit Akv (J):≥94
- Resilient value αkv (J/cm2):≥118(12)
- Degree of hardness: ≤179HB
- Test specimen size: The test specimen blank dimension is 30mm