Post Stock Login Register

GB/T 3077 25CrMnSi vs EN 10084 20MnCr5

Close Alternative — 79.9% match based on chemical composition and mechanical property overlap.

GB/T 3077 25CrMnSi (GB/T 3077:2015) and EN 10084 20MnCr5 (EN 10084:2008) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 25CrMnSi is typically used for hot-rolled or forged structural alloy steel bars, while EN 10084 20MnCr5 is commonly used for gears, shafts, cams, case hardened parts. GB/T 3077 25CrMnSi is defined under Guobiao Standards (GB/T), originating from China, while EN 10084 20MnCr5 is defined under European Standard (EN), originating from Europe.

As per chemical composition, GB/T 3077 25CrMnSi vs EN 10084 20MnCr5 is a 69.9% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 79.9%.

Frequently Compared With GB/T 3077 25CrMnSi:
UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H NF A35-565 100C6
Match Breakdown
CHEMISTRY MATCH
69.9%
MECHANICAL MATCH
100%
OVERALL
79.9%
Specifications
Property GB/T 3077 25CrMnSi EN 10084 20MnCr5
Standard GB/T 3077:2015 EN 10084:2008
Category Alloy Steel Alloy Steel
C (%) 0.22-0.28 0.17-0.22
Si (%) 0.90-1.20 <=0.40
Mn (%) 0.80-1.10 1.10-1.40
Cr (%) 0.80-1.10 1.00-1.30
P (%) <=0.030 <=0.025
S (%) <=0.030 <=0.035
Cu (%) <=0.30 Not specified
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 25CrMnSi EN 10084 20MnCr5
Tensile Strength >=1080 MPa Not specified
Yield Strength >=885 MPa Not specified
Elongation >=10% Not specified
Hardness <=217 HB Soft annealed: 217 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: 41 to 49 HRC
Typical Applications
GB/T 3077 25CrMnSi
Hot-rolled or forged structural alloy steel bars
EN 10084 20MnCr5
Gears, shafts, cams, case hardened parts
Key Differences
Can GB/T 3077 25CrMnSi Be Substituted With EN 10084 20MnCr5?
GB/T 3077 25CrMnSi and EN 10084 20MnCr5 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.
Forms & Sizes Available on M-EX
GB/T 3077 25CrMnSi
No active listings currently.
EN 10084 20MnCr5
Round Bar → (22 listings)
Diameter: 50–75 mm (1.97–2.95 in)
Length: 4700–6900 mm (185.04–271.65 in)
On M-EX Right Now
GB/T 3077 25CrMnSi
0 active listings and RFQs →
EN 10084 20MnCr5
22 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 25CrMnSi and EN 10084 20MnCr5?
GB/T 3077 25CrMnSi specifies Cu which is not specified for EN 10084 20MnCr5.
Can GB/T 3077 25CrMnSi be substituted with EN 10084 20MnCr5?
GB/T 3077 25CrMnSi and EN 10084 20MnCr5 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.