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BS 970 (Part 3) 304S15 vs UNI 6900 X5CrNi1810

Strong Match — 93.9% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 304S15 (BS 970 (Part 3):1991) and UNI 6900 X5CrNi1810 (UNI 6900:1971) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 3) 304S15 is typically used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (table 18), while UNI 6900 X5CrNi1810 is commonly used for used in kitchen equipment, chemical tanks, piping, architectural panels, food processing equipment, and fasteners.. BS 970 (Part 3) 304S15 is defined under British Standards (BS), originating from United Kingdom, while UNI 6900 X5CrNi1810 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy.

As per chemical composition, BS 970 (Part 3) 304S15 vs UNI 6900 X5CrNi1810 is a 93.9% 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 93.9%.

Frequently Compared With BS 970 (Part 3) 304S15:
GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo ASTM A959 .- EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
93.9%
MECHANICAL MATCH
No shared data
OVERALL
93.9%
Specifications
Property BS 970 (Part 3) 304S15 UNI 6900 X5CrNi1810
Standard BS 970 (Part 3):1991 UNI 6900:1971
Category Stainless Steel Stainless Steel
C (%) <=0.06 0.07 max
Si (%) <=1.0 1.00 max
Mn (%) <=2.0 2.00 max
P (%) <=0.045 0.045 max
S (%) <=0.030 0.015 max
Cr (%) 17.5-19.0 17.50-19.50
Ni (%) 8.0-11.0 8.00-10.50
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 3) 304S15 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
BS 970 (Part 3) 304S15
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (Table 18)
UNI 6900 X5CrNi1810
Used in kitchen equipment, chemical tanks, piping, architectural panels, food processing equipment, and fasteners.
Can BS 970 (Part 3) 304S15 Be Substituted With UNI 6900 X5CrNi1810?
BS 970 (Part 3) 304S15 and UNI 6900 X5CrNi1810 overlap closely enough on chemistry and mechanical properties that UNI 6900 X5CrNi1810 is often considered as a substitute for BS 970 (Part 3) 304S15 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
BS 970 (Part 3) 304S15
No active listings currently.
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
BS 970 (Part 3) 304S15
0 active listings and RFQs →
UNI 6900 X5CrNi1810
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 3) 304S15 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 BS 970 (Part 3) 304S15 be substituted with UNI 6900 X5CrNi1810?
BS 970 (Part 3) 304S15 and UNI 6900 X5CrNi1810 overlap closely enough on chemistry and mechanical properties that UNI 6900 X5CrNi1810 is often considered as a substitute for BS 970 (Part 3) 304S15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.