67SiCr5
2025-08-14 14:22:00 Origin： Remark：0 Click：
Spring steel 67SiCr5 cold drawn rod, round bar, Inventory 67SiCr5 Properties steelmaking, ESR melted, blooming, hot forging / rolling, heat treatment
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL DATA SHEET - DIN 67SiCr5
MATERIAL TYPE - Spring Steel
MATERIAL STANDARDS - DIN 17221
CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): 0.62 ~ 0.72
Silicon, Si (％): 1.20 ~ 1.40
Manganese, Mn (％): 0.40 ~ 0.60
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (%): 0.40 ~ 0.60
Molybdenum, Mo (%): -
Vanadium, V (%): -
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Range of size / mm | flat bar: 20
Range of size / mm | round bar: 40
Mechanical property ≥ σb / MPa: 1470～1670
Mechanical property ≥ σs / MPa: 1320
Mechanical property ≥ δ5 (%): 5.0
Mechanical property ≥ ψ (%): 20.0
Mechanical property ≥ Akv / J: 14
HOT WORKING & HEAT TREATMENT
Hot working temperature / ℃: 1050~850
Thermal forming temperature / ℃: 900~820
Heat treatment temperature | annealing /℃: 640 ~ 680
Heat treatment temperature | normalizing /℃: 850 ~ 880
Heat treatment temperature | quenching /℃: 830 ~ 860 Oil
Heat treatment temperature | tempering /℃: 430 ~ 500
Hardness after annealing ≤ HBW: 240
MAIN FEATURES & PERFORMANCE REQUIREMENTS
Spring steel is specialized in producing the spring and elastic components due to its elasticity under the condition of quenching and tempering. The elasticity of steel depends on its capacity of elastic deformation.
This allows objects made of spring steel to return to their original shape despite significant bending or twisting occurs. Spriing steel should possess excellent combination property, such as mechanical property (limit of elasticity, ultimate strength, yield ratio), relaxation resistant, fatigue property, hardenability, physical and chemical property (heat resistance,low temperature resistant, antioxidation, corrosion resistance). To meet the above performance requirement, Spring steel has fine metallurgical quality ( high purity, homogeneity), excellent surface quality ( specially on surface defect and decarburization), precise external form and dimensions.
HEAT TREATMENT
Spring Steel requires higher strength and fatigue limit, usage in the condition of quenching + mesothermal tempering, then it can get higher elastic limit. Process engineering of heat treatment is very important to inherent quality of spring steel.
MANUFACTURING TECHNIQUE
General spring steels are produced in electric furnace, open hearth furnace, oxygen converter,and high quality spring steel of higher quality or special performance can be made in electro slag furnace or vacuum furnace.
PROCESSING PROPERTY
Spring Steel is commonly used in the condition of impact, vibration, or long-term stress. which makes the spring steel require higher tensile strength, limit of elasticity, fatigue strength. also requirement of definite hardenability, good surface quality, not easy decarburization.
PRODUCT PROFILE & DIMENSIONS
Round bar / Wire rod (diameter): 5.5 to 450mm
Square bar / flat bar: 8 to 610mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 200 X W10 - 1200 X L1000-12000mm
Forging piece: stepped shafts, other different shapes based on OEM.
Mechanical property ≥ σs / MPa: 1320
Mechanical property ≥ δ5 (%): 5.0
Mechanical property ≥ ψ (%): 20.0
Mechanical property ≥ Akv / J: 14
HOT WORKING & HEAT TREATMENT
Hot working temperature / ℃: 1050~850
Thermal forming temperature / ℃: 900~820
Heat treatment temperature | annealing /℃: 640 ~ 680
Heat treatment temperature | normalizing /℃: 850 ~ 880
Heat treatment temperature | quenching /℃: 830 ~ 860 Oil
Heat treatment temperature | tempering /℃: 430 ~ 500
Hardness after annealing ≤ HBW: 240
MAIN FEATURES & PERFORMANCE REQUIREMENTS
Spring steel is specialized in producing the spring and elastic components due to its elasticity under the condition of quenching and tempering. The elasticity of steel depends on its capacity of elastic deformation.
This allows objects made of spring steel to return to their original shape despite significant bending or twisting occurs. Spriing steel should possess excellent combination property, such as mechanical property (limit of elasticity, ultimate strength, yield ratio), relaxation resistant, fatigue property, hardenability, physical and chemical property (heat resistance,low temperature resistant, antioxidation, corrosion resistance). To meet the above performance requirement, Spring steel has fine metallurgical quality ( high purity, homogeneity), excellent surface quality ( specially on surface defect and decarburization), precise external form and dimensions.
HEAT TREATMENT
Spring Steel requires higher strength and fatigue limit, usage in the condition of quenching + mesothermal tempering, then it can get higher elastic limit. Process engineering of heat treatment is very important to inherent quality of spring steel.
MANUFACTURING TECHNIQUE
General spring steels are produced in electric furnace, open hearth furnace, oxygen converter,and high quality spring steel of higher quality or special performance can be made in electro slag furnace or vacuum furnace.
PROCESSING PROPERTY
Spring Steel is commonly used in the condition of impact, vibration, or long-term stress. which makes the spring steel require higher tensile strength, limit of elasticity, fatigue strength. also requirement of definite hardenability, good surface quality, not easy decarburization.
PRODUCT PROFILE & DIMENSIONS
Round bar / Wire rod (diameter): 5.5 to 450mm
Square bar / flat bar: 8 to 610mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 200 X W10 - 1200 X L1000-12000mm
Forging piece: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email us: sales@ccsteels.com.
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