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SAE J404 50B46 vs GB/T 3077 45CrNi

Close Alternative — 71.1% match based on chemical composition and mechanical property overlap.

SAE J404 50B46 (SAE J404:2009) and GB/T 3077 45CrNi (GB/T 3077:2015) are both steel grades. Both fall under the Alloy Steel category. SAE J404 50B46 is typically used for chemistry-only alloy steel grade; see the composition notes for product scope, while GB/T 3077 45CrNi is commonly used for hot-rolled or forged structural alloy steel bars. SAE J404 50B46 is defined under SAE International, originating from United States, while GB/T 3077 45CrNi is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, SAE J404 50B46 vs GB/T 3077 45CrNi is a 71.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 71.1%.

Frequently Compared With SAE J404 50B46:
IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Mo6H NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
71.1%
MECHANICAL MATCH
No shared data
OVERALL
71.1%
Specifications
Property SAE J404 50B46 GB/T 3077 45CrNi
Standard SAE J404:2009 GB/T 3077:2015
Category Alloy Steel Alloy Steel
C (%) 0.44-0.49 0.42-0.49
Cr (%) 0.20-0.35 0.45-0.75
Mn (%) 0.75-1.00 0.50-0.80
Ni (%) 0.20-0.35 1.00-1.40
P (%) <=0.030 <=0.030
S (%) <=0.040 <=0.030
Si (%) 0.15-0.35 0.17-0.37
Cu (%) Not specified <=0.30
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property SAE J404 50B46 GB/T 3077 45CrNi
Tensile Strength Not specified >=980 MPa
Yield Strength Not specified >=785 MPa
Elongation Not specified >=10%
Hardness Not specified <=255 HB
Condition Not specified Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered
Typical Applications
SAE J404 50B46
Chemistry-only alloy steel grade; see the composition notes for product scope
GB/T 3077 45CrNi
Hot-rolled or forged structural alloy steel bars
Key Differences
Can SAE J404 50B46 Be Substituted With GB/T 3077 45CrNi?
SAE J404 50B46 and GB/T 3077 45CrNi are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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SAE J404 50B46
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GB/T 3077 45CrNi
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Frequently Asked Questions
What is the difference between SAE J404 50B46 and GB/T 3077 45CrNi?
GB/T 3077 45CrNi specifies Cu which is not specified for SAE J404 50B46.
Can SAE J404 50B46 be substituted with GB/T 3077 45CrNi?
SAE J404 50B46 and GB/T 3077 45CrNi are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.