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UNI 6900 X5CrNi1810 vs ASTM A959 SS304

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

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

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