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GB/T 699 40 vs EN 10084 16NiCr4

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

GB/T 699 40 (GB/T 699:2015) and EN 10084 16NiCr4 (EN 10084:2008) are both steel grades. GB/T 699 40 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 40 is typically used for used for gears, shafts, axles, crankshafts, couplings, and machine spindles., while EN 10084 16NiCr4 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1). GB/T 699 40 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 40 vs EN 10084 16NiCr4 is a 63.8% 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 40:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 060A40 BS 970 (Part 1) 040A12 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
63.8%
MECHANICAL MATCH
100%
OVERALL
65%
Specifications
Property GB/T 699 40 EN 10084 16NiCr4
Standard GB/T 699:2015 EN 10084:2008
Category Carbon Steel Alloy Steel
C (%) 0.37-0.44 0.13-0.19
Si (%) 0.17-0.37 <=0.40
Mn (%) 0.50-0.80 0.70-1.00
P (%) <=0.035 <=0.025
S (%) <=0.035 <=0.035
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 40 EN 10084 16NiCr4
Tensile Strength >=570 MPa Not specified
Yield Strength >=335 MPa Not specified
Elongation >=19% 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 40
Used for gears, shafts, axles, crankshafts, couplings, and machine spindles.
EN 10084 16NiCr4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Key Differences
Can GB/T 699 40 Be Substituted With EN 10084 16NiCr4?
GB/T 699 40 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.
Forms & Sizes Available on M-EX
GB/T 699 40
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5000–7000 mm (196.85–275.59 in)
EN 10084 16NiCr4
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On M-EX Right Now
GB/T 699 40
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EN 10084 16NiCr4
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Frequently Asked Questions
What is the difference between GB/T 699 40 and EN 10084 16NiCr4?
Different category: GB/T 699 40 is Carbon Steel, EN 10084 16NiCr4 is Alloy Steel. GB/T 699 40 specifies Cu which is not specified for EN 10084 16NiCr4.
Can GB/T 699 40 be substituted with EN 10084 16NiCr4?
GB/T 699 40 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.