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ASTM A959 SS304 vs UNI 6900 X5CrNi1810

Strong Match — 97.2% match based on chemical composition and mechanical property overlap.

ASTM A959 SS304 (ASTM A959:2011) and UNI 6900 X5CrNi1810 (UNI 6900:1971) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 SS304 is typically used for food processing, chemical equipment, kitchen equipment, while UNI 6900 X5CrNi1810 is commonly used for used in kitchen equipment, chemical tanks, piping, architectural panels, food processing equipment, and fasteners.. ASTM A959 SS304 is defined under ASTM International, originating from United States, while UNI 6900 X5CrNi1810 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy.

As per chemical composition, ASTM A959 SS304 vs UNI 6900 X5CrNi1810 is a 97.2% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 97.2%.

Frequently Compared With ASTM A959 SS304:
EN 10088-1 1.4845 EN 10088-1 1.4301 GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4401 GOST 5632 12Kh13 ASTM A959 .- IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
97.2%
MECHANICAL MATCH
No shared data
OVERALL
97.2%
Specifications
Property ASTM A959 SS304 UNI 6900 X5CrNi1810
Standard ASTM A959:2011 UNI 6900:1971
Category Stainless Steel Stainless Steel
C (%) <=0.07 0.07 max
Cr (%) 17.5-19.5 17.50-19.50
Mn (%) <=2.00 2.00 max
Ni (%) 8.0-11.0 8.00-10.50
P (%) <=0.045 0.045 max
S (%) <=0.030 0.015 max
Si (%) <=1.00 1.00 max
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A959 SS304 UNI 6900 X5CrNi1810
Tensile Strength Not specified 520-720 MPa
Yield Strength Not specified 210 MPa min
Elongation Not specified 45% min
Hardness Not specified 187 HB max
Typical Applications
ASTM A959 SS304
Food processing, chemical equipment, kitchen equipment
UNI 6900 X5CrNi1810
Used in kitchen equipment, chemical tanks, piping, architectural panels, food processing equipment, and fasteners.
Can ASTM A959 SS304 Be Substituted With UNI 6900 X5CrNi1810?
ASTM A959 SS304 and UNI 6900 X5CrNi1810 overlap closely enough on chemistry and mechanical properties that UNI 6900 X5CrNi1810 is often considered as a substitute for ASTM A959 SS304 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
ASTM A959 SS304
Sheet → (22 listings)
Thickness: 2–6 mm (0.08–0.24 in)
Width: 1250–1250 mm (49.21–49.21 in)
Length: 2500–4100 mm (98.43–161.42 in)
Round Bar → (6 listings)
Diameter: 50–65 mm (1.97–2.56 in)
Length: 2500–6900 mm (98.43–271.65 in)
Plate → (6 listings)
Thickness: 8–12 mm (0.31–0.47 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–3800 mm (98.43–149.61 in)
UNI 6900 X5CrNi1810
Sheet → (2 listings)
Thickness: 6–6 mm (0.24–0.24 in)
Width: 1250–1250 mm (49.21–49.21 in)
Length: 2600–3700 mm (102.36–145.67 in)
On M-EX Right Now
ASTM A959 SS304
34 active listings and RFQs →
UNI 6900 X5CrNi1810
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A959 SS304 and UNI 6900 X5CrNi1810?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 SS304 be substituted with UNI 6900 X5CrNi1810?
ASTM A959 SS304 and UNI 6900 X5CrNi1810 overlap closely enough on chemistry and mechanical properties that UNI 6900 X5CrNi1810 is often considered as a substitute for ASTM A959 SS304 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.