What sizes of SA387 Grade 9 Class 2 do you stock in Dubai?

We hold SA387 Grade 9 Class 2 in the following forms and size ranges — Plates: 6 - 150 mm thk, up to 3000 mm wide, N or Q+T, Flanges: 1/2" - 24", 150# - 2500#, F11 / F12 / F22 / F5 / F9 / F91, Fittings: 1/2" - 24" butt weld fittings, WP11 / WP22 / WP91. Cut-to-size, profiling and kitting are available on request, and anything outside the stock range is sourced direct from the mill.

What are the equivalent grades to SA387 Grade 9 Class 2?

SA387 Grade 9 Class 2 is commonly cross-referenced with X11CrMo9-1, 1.7386, A387 Gr 9 Cl 2. Equivalents are nominal: send us the property that matters for your application and we will confirm the closest grade we can certify.

Is SA387 Grade 9 Class 2 supplied with mill certification?

Yes. Every delivery of SA387 Grade 9 Class 2 is supplied against ASTM A387 / ASME SA387 Class 2, ASME Section II Part A, EN 10028-2, EN 10204 3.1 / 3.2 with EN 10204 3.1 mill certification and full heat-number traceability. Third-party inspection can be arranged on request.

What is SA387 Grade 9 Class 2 typically used for?

SA387 Grade 9 Class 2 is specified for pressure vessel shells and heads for elevated temperature service, hydrogen service reactors and separators, boiler drums, headers and steam plant, mainly in Oil & Gas, Petrochemical, Refining. Tell us the duty and we will advise whether SA387 Grade 9 Class 2 or another alloy steel grade is the better fit.

SA387 Grade 9 Class 2

ASTM / ASME A387 / SA387 Grade 9 Class 2EN X11CrMo9-1 / 1.7386

حالة المخزونMill indent

مدة التوريد4 - 8 weeks mill indent

9Cr-1Mo plate for high temperature service. Used where sulphidic corrosion resistance and creep strength have to be carried above the 5Cr range, typically in refinery heaters and transfer line equipment.

Chromium-molybdenum creep strength at elevated temperature
Resistance to hydrogen attack (Nelson curve service)
Supplied normalised and tempered with simulated PWHT on request
Ultrasonic testing to SA578 and through-thickness Z grades available

الأشكال والمقاسات المتوفرة

الشكل	نطاق المقاسات
الألواح	6 - 150 mm thk, up to 3000 mm wide, N or Q+T
الفلنجات	1/2" - 24", 150# - 2500#, F11 / F12 / F22 / F5 / F9 / F91
الوصلات	1/2" - 24" butt weld fittings, WP11 / WP22 / WP91

التركيب الكيميائي (%)

العنصر	الحد الأدنى	الحد الأقصى
C	-	0.15
Cr	8.00	10.00
Mo	0.90	1.10
Si	0.25	1.00
Mn	0.30	0.60

الخصائص الميكانيكية

الخاصية	القيمة	الوحدة
Yield Strength (0.2%)	380 min	MPa
Tensile Strength	585 - 760	MPa
Elongation	18 min	%
Condition	Normalised and tempered	-

الخصائص الفيزيائية

الخاصية	القيمة	الوحدة
Density	7.85	g/cm3
Max Service Temperature	550 - 650 depending on grade	C

التطبيقات النموذجية

Pressure vessel shells and heads for elevated temperature service

Hydrogen service reactors and separators

Boiler drums, headers and steam plant

Petrochemical heaters and hot wall equipment

أسئلة متكررة

[ 02 ] درجات أخرى في الفولاذ السبائكي

AISI 4140 / 42CrMo4

Ex-stock Dubai

AISI 4140EN 42CrMo4 / 1.7225

الفولاذ الهندسي الكروم-الموليبدينوم من خلال التقسية. يجمع بشكل ممتاز بين القوة والمتانة وقابلية التشغيل الآلي في الحالة المروية والمقساة.

3 شكل متوفر

AISI 4340 / 34CrNiMo6

Mill indent

AISI 4340EN 34CrNiMo6 / 1.6582

الفولاذ النيكل-كروم-مولبيدنيوم مع قابلية التصليد العالية جداً والمتانة في المقاطع الثقيلة، يُختار لأجزاء الآلات الأكثر إجهاداً.

2 شكل متوفر

SA387 Grade 11 Class 2

Mill indent

ASTM / ASME A387 / SA387 Grade 11 Class 2EN 13CrMoSi5-5 / 1.7336

1.25Cr-0.5Mo-Si pressure vessel plate. The silicon addition improves oxidation resistance, making Grade 11 the common choice for hot wall vessels and hydrogen service up to around 550 C where full 2.25Cr strength is not required.

3 شكل متوفر

SA387 Grade 12 Class 2

Mill indent

ASTM / ASME A387 / SA387 Grade 12 Class 2EN 13CrMo4-5 / 1.7335

1Cr-0.5Mo pressure vessel plate. The economical Cr-Mo grade for moderate temperature pressure parts, widely used for separator and drum shells where creep and hydrogen resistance are needed but the duty is below the 2.25Cr range.

3 شكل متوفر

SA387 Grade 22 Class 2

Mill indent

ASTM / ASME A387 / SA387 Grade 22 Class 2EN 10CrMo9-10 / 1.7380

2.25Cr-1Mo pressure vessel plate — the refinery standard for hydroprocessing. The higher chromium and molybdenum push the Nelson curve limit well above Grade 11, which is why reactors, separators and hot wall equipment in hydrogen service specify it.

3 شكل متوفر

SA387 Grade 5 Class 2

Mill indent

ASTM / ASME A387 / SA387 Grade 5 Class 2EN X12CrMo5 / 1.7362

5Cr-0.5Mo plate. The chromium level lifts resistance to sulphidic corrosion and high temperature oxidation, so Grade 5 is specified for crude and vacuum unit hot sections where naphthenic and sulphur attack dominate.

3 شكل متوفر

تحميل البيانات الفنية EN