BSt500, BSt420, DIN 488, Reinforcing Steel

BSt500, BSt420, DIN 488, Reinforcing Steel
STEELMAX Steel Story

BSt500, BSt420 는 DIN-EN 철근 규격입니다.
Betonstahl (콘크리트 강철) — 철근을 의미하고

숫자는 항복강도 (Yield strength) MPa 최소 값을 나타냅니다.
BSt500 인장강도는 550 MPa 고강도 철근입니다.

DIN 488-1 : Reinforcing steels – Grades, properties, marking
DIN 488-6 : Reinforcing steels – Inspection 규정을 따릅니다.

Symbol		BSt500	BSt420
Material Number		1.0438	1.0428
Yield strength (MPa, min)		500	420
Tensile strength (MPa, min)		550	500
Chemical composition (%, min)	Carbon (C)	0.22 max	0.22 max
	Phosphorus (P)	0.050 max	0.050 max
	Sulfur (S)	0.050 max	0.050 max
	Nitrogen (N)	0.012 max	0.012max

※ Mechanical properties (기계적 성질 : 機械的性質)
Various properties relating to mechanical deformation and
breaking such as tensile strength, yield point or proof strength,
elongation, reduction of area, hardness, impact value,
fatigue strength, creep strength, etc.

인장 강도, 항복점, 연신율, 단면 수축율, 경도, 충격치, 피로 강도,
크리프 강도 등 기계적인 변형 및 파괴에 관계되는 성질.

※ Tensile Strength — DIN EN
Measures the engineering stress applied at the point when it fails.
The maximum amount tensile stress is called “Tensile strength”
It is determined by the tensile test.
Years ago a lot of construction steels were named according to
their tensile strength.
For example St37 (tensile strength is 370 N/㎟) or St52 (tensile
strength 520 N/㎟).
Nowadays they changed their designation and method has been
changed and yield strength is used.
For example S355JR (yield strength is 355 N/㎟) or S420 (yield
strength 420 N/㎟).