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KS D3503 SS400 vs ASTM A572 Gr.65

Related Material — 59.6% match based on chemical composition and mechanical property overlap.

KS D3503 SS400 (KS D 3503:2016) and ASTM A572 Gr.65 (ASTM A572) are both steel grades. Both fall under the Structural Steel category. KS D3503 SS400 is typically used for structural fabrication,bridges,buildings,machinery frames,general construction,welded structures,plates,sections, while ASTM A572 Gr.65 is commonly used for used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.. KS D3503 SS400 is defined under Korean Industrial Standards (KS), originating from South Korea, while ASTM A572 Gr.65 is defined under ASTM International, originating from United States.

As per chemical composition, KS D3503 SS400 vs ASTM A572 Gr.65 is a 89.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 59.6%.

Frequently Compared With KS D3503 SS400:
CSA G40.21 350W AS/NZS 3679.1 350 AS/NZS 3679.1 300 CSA G40.21 400W GOST 19281 09G2S CSA G40.21 400A CSA G40.21 480W ASTM A1008 SS Grade 50 CSA G40.21 260W CSA G40.21 300W ASTM A1008 SS Grade 80 ASTM A283C
Match Breakdown
CHEMISTRY MATCH
89.4%
MECHANICAL MATCH
0%
OVERALL
59.6%
Specifications
Property KS D3503 SS400 ASTM A572 Gr.65
Standard KS D 3503:2016 ASTM A572
Category Structural Steel Structural Steel
C (%) <=0.25 0.23 max
Mn (%) <=1.50 1.35 max
P (%) <=0.050 0.040 max
S (%) <=0.050 0.050 max
Si (%) Not specified 0.40 max
V (%) Not specified 0.15 max
Nb (%) Not specified 0.05 max
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property KS D3503 SS400 ASTM A572 Gr.65
Tensile Strength 400-510 MPa 550-690 MPa
Yield Strength 245 MPa min 450 MPa min
Elongation 21-23 % 18-21%
Hardness Not specified 170-220 HB
Typical Applications
KS D3503 SS400
structural fabrication,bridges,buildings,machinery frames,general construction,welded structures,plates,sections
ASTM A572 Gr.65
Used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.
Key Differences
Can KS D3503 SS400 Be Substituted With ASTM A572 Gr.65?
KS D3503 SS400 and ASTM A572 Gr.65 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
KS D3503 SS400
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3000–3700 mm (118.11–145.67 in)
ASTM A572 Gr.65
Plate → (4 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2600–4400 mm (102.36–173.23 in)
On M-EX Right Now
KS D3503 SS400
2 active listings and RFQs →
ASTM A572 Gr.65
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between KS D3503 SS400 and ASTM A572 Gr.65?
ASTM A572 Gr.65 specifies Si, V, Nb which are not specified for KS D3503 SS400.
Can KS D3503 SS400 be substituted with ASTM A572 Gr.65?
KS D3503 SS400 and ASTM A572 Gr.65 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.