Related Material — 65% match
based on chemical composition and mechanical property overlap.
GB/T 699 30Mn (GB/T 699:2015) and EN 10084 16NiCr4 (EN 10084:2008) are both steel grades.
GB/T 699 30Mn is classified under Carbon Steel, while EN 10084 16NiCr4 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below.
GB/T 699 30Mn is typically used for hot-rolled or forged quality carbon structural steel bars up to 250 mm, while EN 10084 16NiCr4 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1).
GB/T 699 30Mn is defined under Guobiao Standards (GB/T), originating from China, while EN 10084 16NiCr4 is defined under European Standard (EN), originating from Europe.
As per chemical composition, GB/T 699 30Mn vs EN 10084 16NiCr4 is a 68.3% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a related material overall at 65%.
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 699 30Mn
EN 10084 16NiCr4
Tensile Strength
>=540 MPa
Not specified
Yield Strength
>=315 MPa
Not specified
Elongation
>=20%
Not specified
Hardness
<=217 HB (as delivered, not heat treated)
Soft annealed: 217 HB max
Condition
Normalized 25 mm sample blank, bars up to 80 mm; hardness for delivery state
Soft annealed
Hardenability
Not specified
+H band at 1.5 mm from the quenched end: 39 to 47 HRC
Typical Applications
GB/T 699 30Mn
Hot-rolled or forged quality carbon structural steel bars up to 250 mm
EN 10084 16NiCr4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Key Differences
Different category: GB/T 699 30Mn is Carbon Steel, EN 10084 16NiCr4 is Alloy Steel.
GB/T 699 30Mn specifies Cu which is not specified for EN 10084 16NiCr4.
Can GB/T 699 30Mn Be Substituted With EN 10084 16NiCr4?
GB/T 699 30Mn and EN 10084 16NiCr4 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between GB/T 699 30Mn and EN 10084 16NiCr4?
Different category: GB/T 699 30Mn is Carbon Steel, EN 10084 16NiCr4 is Alloy Steel. GB/T 699 30Mn specifies Cu which is not specified for EN 10084 16NiCr4.
Can GB/T 699 30Mn be substituted with EN 10084 16NiCr4?
GB/T 699 30Mn and EN 10084 16NiCr4 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.