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GB/T 699 30Mn vs EN 10084 16NiCrS4

Related Material — 65% match based on chemical composition and mechanical property overlap.

GB/T 699 30Mn (GB/T 699:2015) and EN 10084 16NiCrS4 (EN 10084:2008) are both steel grades. GB/T 699 30Mn is classified under Carbon Steel, while EN 10084 16NiCrS4 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 16NiCrS4 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 16NiCrS4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, GB/T 699 30Mn vs EN 10084 16NiCrS4 is a 66.5% match. As per mechanical properties, the match is 100%. Combined, this makes them a related material overall at 65%.

Frequently Compared With GB/T 699 30Mn:
BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A40
Match Breakdown
CHEMISTRY MATCH
66.5%
MECHANICAL MATCH
100%
OVERALL
65%
Specifications
Property GB/T 699 30Mn EN 10084 16NiCrS4
Standard GB/T 699:2015 EN 10084:2008
Category Carbon Steel Alloy Steel
C (%) 0.27-0.34 0.13-0.19
Si (%) 0.17-0.37 <=0.40
Mn (%) 0.70-1.00 0.70-1.00
P (%) <=0.035 <=0.025
S (%) <=0.035 0.020-0.040
Cr (%) <=0.25 0.60-1.00
Ni (%) <=0.30 0.80-1.10
Cu (%) <=0.25 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 699 30Mn EN 10084 16NiCrS4
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 16NiCrS4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Key Differences
Can GB/T 699 30Mn Be Substituted With EN 10084 16NiCrS4?
GB/T 699 30Mn and EN 10084 16NiCrS4 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.
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GB/T 699 30Mn
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EN 10084 16NiCrS4
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Frequently Asked Questions
What is the difference between GB/T 699 30Mn and EN 10084 16NiCrS4?
Different category: GB/T 699 30Mn is Carbon Steel, EN 10084 16NiCrS4 is Alloy Steel. GB/T 699 30Mn specifies Cu which is not specified for EN 10084 16NiCrS4.
Can GB/T 699 30Mn be substituted with EN 10084 16NiCrS4?
GB/T 699 30Mn and EN 10084 16NiCrS4 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.