52100 steel is known for its high carbon and chromium content, which gives it excellent wear resistance and strength. It is a popular material in the bearing industry and other applications requiring high wear resistance. Various standards and specifications worldwide have equivalent of 52100 steel materials. Here are some of the most commonly recognized equivalents:
International Equivalents
AISI/SAE (USA):
AISI 52100
SAE 52100 These designations are identical and are the direct U.S. equivalents.
DIN (Germany):
DIN 100Cr6 This is a commonly used German equivalent for 52100, known for its similar composition and properties.
EN (Europe):
EN 31 This European standard equivalent to 52100 is widely used for bearing steel.
JIS (Japan):
JIS SUJ2 The Japanese Industrial Standard equivalent, SUJ2, matches the chemical composition and properties of 52100 steel closely.
BS (United Kingdom):
BS 535A99 This British Standard equivalent is used in applications similar to those for 52100 steel.
GOST (Russia):
GOST 1050 The Russian equivalent has a slightly different composition but is used for similar applications.
UNI (Italy):
UNI 100Cr6 This Italian standard is equivalent to the German DIN 100Cr6 and thus to 52100.
Comparison of Chemical Composition
To ensure that these equivalents offer similar properties, it's essential to compare their chemical compositions. Here’s a comparison of the typical compositions:
52100:
Carbon (C): 0.98-1.10%
Chromium (Cr): 1.30-1.60%
Manganese (Mn): 0.25-0.45%
Silicon (Si): 0.15-0.35%
Phosphorus (P): ≤ 0.025%
Sulfur (S): ≤ 0.025%
100Cr6 (DIN):
Carbon (C): 0.95-1.05%
Chromium (Cr): 1.35-1.65%
Manganese (Mn): ≤ 0.35%
Silicon (Si): ≤ 0.35%
Phosphorus (P): ≤ 0.025%
Sulfur (S): ≤ 0.025%
SUJ2 (JIS):
Carbon (C): 0.95-1.10%
Chromium (Cr): 1.30-1.60%
Manganese (Mn): 0.25-0.50%
Silicon (Si): 0.15-0.35%
Phosphorus (P): ≤ 0.025%
Sulfur (S): ≤ 0.025%
EN31 (EN):
Carbon (C): 0.90-1.20%
Chromium (Cr): 1.00-1.60%
Manganese (Mn): 0.30-0.75%
Silicon (Si): ≤ 0.35%
Phosphorus (P): ≤ 0.025%
Sulfur (S): ≤ 0.025%
535A99 (BS):
Carbon (C): 0.95-1.05%
Chromium (Cr): 1.30-1.65%
Manganese (Mn): 0.20-0.45%
Silicon (Si): 0.15-0.35%
Phosphorus (P): ≤ 0.025%
Sulfur (S): ≤ 0.025%
GOST 1050 (GOST):
Carbon (C): 0.95-1.10%
Chromium (Cr): 1.30-1.65%
Manganese (Mn): 0.25-0.50%
Silicon (Si): 0.15-0.35%
Phosphorus (P): ≤ 0.025%
Sulfur (S): ≤ 0.025%
Applications of Equivalent Steels
Just like 52100 steel, its equivalents are used in various high-stress, high-wear applications, including:
Bearings: Ball bearings, roller bearings, and other rolling-element bearings.
Automotive Components: Such as transmission gears, shafts, and other high-stress parts.
Aerospace Components: Landing gear parts, actuators, and other critical components.
Industrial Machinery: Gears, axles, and other machine parts subjected to wear and stress.
Precision Tools: Gage blocks, ball screws, and other tools requiring high hardness and precision.
Conclusion
52100 steel has several equivalents across different international standards, including DIN 100Cr6, JIS SUJ2, and EN31, among others. These equivalents share similar chemical compositions and mechanical properties, making them suitable substitutes in applications requiring high hardness, wear resistance, and fatigue strength. Understanding these equivalents helps in selecting the right material for specific engineering requirements across various regions and standards.
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