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CSA G40.21 350WT vs GOST 4543 12HN3A

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

CSA G40.21 350WT (CSA G40.21-13 (R2023)) and GOST 4543 12HN3A (GOST 4543-2016) are both steel grades. Both fall under the Alloy Steel category. CSA G40.21 350WT is typically used for bridges,offshore structures,heavy fabrication,pressure vessels,cranes,structural components, while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components.. CSA G40.21 350WT is defined under Canadian Standards Association (CSA) (Canada).

As per chemical composition, CSA G40.21 350WT vs GOST 4543 12HN3A is a 64.9% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With CSA G40.21 350WT:
NF A35-565 100C6 UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10
Other Alloy Steel Grades to Compare With CSA G40.21 350WT:
EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
64.9%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property CSA G40.21 350WT GOST 4543 12HN3A
Standard CSA G40.21-13 (R2023) GOST 4543-2016
Category Alloy Steel Alloy Steel
C (%) <=0.22 0.09-0.16
Mn (%) <=1.60 0.3-0.6
P (%) <=0.035 Not specified
S (%) <=0.035 Not specified
Cr (%) Not specified 0.6-0.9
Ni (%) Not specified 2.75-3.15
Si (%) Not specified 0.17-0.37
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property CSA G40.21 350WT GOST 4543 12HN3A
Tensile Strength 480-650 MPa 850-1050 MPa
Yield Strength 350 MPa min 685 MPa min
Elongation 18-22 % 11% min
Hardness Not specified 58-62 HRC (case)
Typical Applications
CSA G40.21 350WT
bridges,offshore structures,heavy fabrication,pressure vessels,cranes,structural components
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
Can CSA G40.21 350WT Be Substituted With GOST 4543 12HN3A?
CSA G40.21 350WT and GOST 4543 12HN3A 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
CSA G40.21 350WT
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6600–7000 mm (259.84–275.59 in)
GOST 4543 12HN3A
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5600–6600 mm (220.47–259.84 in)
On M-EX Right Now
CSA G40.21 350WT
2 active listings and RFQs →
GOST 4543 12HN3A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 350WT and GOST 4543 12HN3A?
CSA G40.21 350WT specifies P, S which are not specified for GOST 4543 12HN3A. GOST 4543 12HN3A specifies Cr, Ni, Si which are not specified for CSA G40.21 350WT.
Can CSA G40.21 350WT be substituted with GOST 4543 12HN3A?
CSA G40.21 350WT and GOST 4543 12HN3A 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.