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GB/T 3077 20CrMnSi vs EN 10084 16MnCrB5

Close Alternative — 83% match based on chemical composition and mechanical property overlap.

GB/T 3077 20CrMnSi (GB/T 3077:2015) and EN 10084 16MnCrB5 (EN 10084:2008) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 20CrMnSi is typically used for hot-rolled or forged structural alloy steel bars, while EN 10084 16MnCrB5 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1). GB/T 3077 20CrMnSi is defined under Guobiao Standards (GB/T), originating from China, while EN 10084 16MnCrB5 is defined under European Standard (EN), originating from Europe.

As per chemical composition, GB/T 3077 20CrMnSi vs EN 10084 16MnCrB5 is a 74.5% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 83%.

Frequently Compared With GB/T 3077 20CrMnSi:
IS 4367 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5
Match Breakdown
CHEMISTRY MATCH
74.5%
MECHANICAL MATCH
100%
OVERALL
83%
Specifications
Property GB/T 3077 20CrMnSi EN 10084 16MnCrB5
Standard GB/T 3077:2015 EN 10084:2008
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.14-0.19
Si (%) 0.90-1.20 <=0.40
Mn (%) 0.80-1.10 1.00-1.30
Cr (%) 0.80-1.10 0.80-1.10
P (%) <=0.030 <=0.025
S (%) <=0.030 <=0.035
Cu (%) <=0.30 Not specified
B (%) Not specified 0.0008-0.0050
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GB/T 3077 20CrMnSi EN 10084 16MnCrB5
Tensile Strength >=785 MPa Not specified
Yield Strength >=635 MPa Not specified
Elongation >=12% Not specified
Hardness <=207 HB Soft annealed: 207 HB max
Condition Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered Soft annealed
Hardenability Not specified +H band at 1.5 mm from the quenched end: 39 to 47 HRC
Typical Applications
GB/T 3077 20CrMnSi
Hot-rolled or forged structural alloy steel bars
EN 10084 16MnCrB5
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Key Differences
Can GB/T 3077 20CrMnSi Be Substituted With EN 10084 16MnCrB5?
GB/T 3077 20CrMnSi and EN 10084 16MnCrB5 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.
On M-EX Right Now
GB/T 3077 20CrMnSi
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EN 10084 16MnCrB5
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Frequently Asked Questions
What is the difference between GB/T 3077 20CrMnSi and EN 10084 16MnCrB5?
GB/T 3077 20CrMnSi specifies Cu which is not specified for EN 10084 16MnCrB5. EN 10084 16MnCrB5 specifies B which is not specified for GB/T 3077 20CrMnSi.
Can GB/T 3077 20CrMnSi be substituted with EN 10084 16MnCrB5?
GB/T 3077 20CrMnSi and EN 10084 16MnCrB5 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.