SA 387 Chrome Moly Steels Manufacturer, Supplier, Exporter, Mumbai, India

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ASME SA387 Steel Plates, ASME SA 387 GRADE 5 Class 1, ASME SA 387 GRADE 9 CLass1, ASME SA 387 GRADE 11 CLass1, ASME SA 387 GRADE 12 CLass1, ASME SA 387 GRADE 22 CLass1, ASME SA 387 GRADE 91 CLass1, ASME SA 387 GRADE 5 Class ASME SA 387 GRADE 9 CLass2, ASME SA 387 GRADE 11 CLass2, ASME SA 387 GRADE 12 CLass2, ASME SA 387 GRADE 22 CLass2, ASME SA 387 GRADE 91 CLass2. ASTM A387 Plates, ASTM A387 GRADE 5 CLASS 1, ASTM A387 GRADE 9 CLASS 1, ASTM A387 GRADE 11 CLASS 1, ASTM A387 GRADE 12 CLASS 1, ASTM A387 GRADE 22 CLASS 1, ASTM A387 GRADE 91 CLASS 1, ASTM A387 GRADE 5 CLASS 2, ASTM A387 GRADE 9 CLASS 2, ASTM A387 GRADE 11 CLASS 2, ASTM A387 GRADE 12 CLASS 2, ASTM A387 GRADE 22 CLASS 2, ASTM A387 GRADE 91 CLASS 2 Supplier and exporter.

SA 387 CHROME MOLY STEEL more common applications of this grade is Refineries, Power Plants, and certain areas of Chemical Plants in environments with elevated temperatures and limited corrosion concerns. These grades can be specified in either class 1 or 2. It can also be provided in the Normalized & Tempered or Annealed conditions. The annealing process – which would meet Class 1 properties, "softens" the steel to enhance greater forming capabilities.

Reading the grade list: “ASME SA 387 GRADE 5 Class ASME SA 387 GRADE 9 CLass2” should read “GRADE 5 Class 2, GRADE 9 Class 2”, and “CLass1” means Class 1. Current ASTM A387 editions supply Grade 91 at a single tensile level, so “Grade 91 Class 1” and “Class 2” both refer to Grade 91 ordered to the Grade 91 requirements. Each grade and class has its own page in the table below.

SA 387 Chrome Moly Steels: Quick Buying Information

Buying item	Information to specify
Specification and edition	ASME SA387 with the code edition, or ASTM A387 with the edition year.
Grade and class	Grade 5, 9, 11, 12 or 22 in Class 1 or Class 2, or Grade 91.
Heat-treatment condition	Normalized and tempered; annealed is permitted for Class 1. Quenched and tempered where your specification allows it.
Dimensions	Thickness × width × length in mm and the number of plates.
Supplementary requirements	Simulated PWHT, Charpy impact tests, ultrasonic examination or hydrogen-service tests, as your specification requires.
Documents and processing	EN 10204 3.1 or 3.2 certificate, inspection agency, cutting drawing and edge preparation.

Explore Our SA 387 Chrome Moly Range

Order to ASME SA387 for ASME code construction, or to ASTM A387 where the purchase specification names the ASTM standard. Each has its own grade and class pages.

ASME SA387 Steel Plates

For boilers and pressure vessels built to the ASME Boiler and Pressure Vessel Code. State the code edition and any supplementary requirements.

View ASME SA387 Steel Plates

ASTM A387 Plates

Chromium-molybdenum pressure-vessel plate to the ASTM specification, with general requirements from ASTM A20. Specify the edition required.

View ASTM A387 Plates

Grade and Class Pages

Grade	Nominal Cr–Mo	ASME SA387	ASTM A387
Grade 5	5% Cr – 0.5% Mo	Class 1 Class 2	Class 1 Class 2
Grade 9	9% Cr – 1% Mo	Class 1 Class 2	Class 1 Class 2
Grade 11	1.25% Cr – 0.5% Mo	Class 1 Class 2	Class 1 Class 2
Grade 12	1% Cr – 0.5% Mo	Class 1 Class 2	Class 1 Class 2
Grade 22	2.25% Cr – 1% Mo	Class 1 Class 2	Class 1 Class 2
Grade 91	9% Cr – 1% Mo, with V and Nb	Class 1 Class 2	Class 1 Class 2

Class 1 or Class 2: Compare Before Purchasing

Consideration	Class 1	Class 2	Grade 91
Strength	Lower minimum tensile and yield (see table below)	Higher minimum tensile and yield, allowing thinner walls	Highest in this range: 85–110 ksi tensile, 60 ksi yield
Heat treatment	Normalized and tempered, or annealed	Normalized and tempered (or quenched and tempered where permitted); not annealed	Normalized and tempered, with tightly controlled tempering
Typical reason to choose	Forming-intensive fabrication; designs based on Class 1 allowables	Higher design pressure or lower weight	High creep strength in power and process equipment

The class must match the allowable stresses used in your design calculations. Do not substitute Class 1 for Class 2 without re-checking the design.

How to Select the Right SA 387 Grade

Design temperature
Pressure and class
Hydrogen and sulfur
Code edition
PWHT

Grades 11 and 12 suit moderate temperatures; Grade 22 is the usual choice for higher temperature and hydrogen service; Grades 5 and 9 are used where high-sulfur refinery streams need more chromium; Grade 91 gives the highest creep strength. Choose the class from your design allowables, then decide on simulated PWHT, impact, ultrasonic and hydrogen-service testing before you enquire. The project engineer's approved grade and specification decide suitability.

Chemical Requirements

Element	Composition %
Element	Grade 2	Grade 12	Grade 11	Grade 22	Grade 21	Grade 5	Grade 7	Grade 9	Grade 91
Carbon, max:
Heat anal.	0.05-0.21	0.05-0.17	0.05-0.17	0.05-0.15A	0.05-0.15A	0.15 max	0.15 max	0.15 max	0.08-0.12
Product anal.	0.04-0.21	0.04-0.17	0.04-0.17	0.04-0.15A	0.04-0.15A	0.15 max	0.15 max	0.15 max	0.06-0.15
Manganese, max:
Heat anal.	0.55-0.80	0.40-0.65	0.40-0.65	0.30-0.60	0.30-0.60	0.30-0.60	0.30-0.60	0.30-0.60	0.30-0.60
Product anal.	0.50-0.88	0.35-0.73	0.35-0.73	0.25-0.66	0.25-0.66	0.25-0.66	0.25-0.66	0.25-0.66	0.25-0.66
Phosphorus, max:
Heat anal.	0.035	0.035	0.035	0.035	0.035	0.040	0.030	0.030	0.020
Product anal.	0.035	0.035	0.035	0.035	0.035	0.040	0.030	0.030	0.025
Sulfur, max:
Heat anal.	0.040	0.040	0.040	0.035	0.035	0.030	0.030	0.030	0.010
Product anal.	0.040	0.040	0.040	0.035	0.035	0.030	0.030	0.030	0.012
Silicon:
Heat anal.	0.15-0.40	0.15-0.40	0.50-0.80	0.50 max	0.50 max	0.50 max	1.00 max	1.00 max	0.20-0.50
Product anal.	0.13-0.45	0.13-0.45	0.44-0.86	0.50 max	0.50 max	0.55 max	1.05 max	1.05 max	0.18-0.56
Chromium:
Heat anal.	0.50-0.80	0.80-1.15	1.00-1.50	2.00-2.50	2.75-3.25	4.00-6.00	6.00-8.00	8.00-10.00	8.00-9.50
Product anal.	0.46-0.85	0.74-1.21	0.94-1.56	1.88-2.62	2.63-3.37	3.90-6.10	5.90-8.10	7.90-10.10	7.90-9.60
Molybdenum:
Heat anal.	0.45-0.60	0.45-0.60	0.45-0.65	0.90-1.10	0.90-1.10	0.45-0.65	0.45-0.65	0.90-1.10	0.85-1.05
Product anal.	0.40-0.65	0.40-0.65	0.40-0.70	0.85-1.15	0.85-1.15	0.40-0.70	0.40-0.70	0.85-1.15	0.80-1.10
Nickel, max:
Heat anal.	...	...	...	...	...	...	...	...	0.40
Product anal.	...	...	...	...	...	...	...	...	0.43
Vanadium:
Heat anal.	...	...	...	...	...	...	...	...	0.18-0.25
Product anal.	...	...	...	...	...	...	...	...	0.16-0.27
Columbium:
Heat anal.	...	...	...	...	...	...	...	...	0.06-0.10
Product anal.	...	...	...	...	...	...	...	...	0.05-0.11
Nitrogen:
Heat anal.	...	...	...	...	...	...	...	...	0.030-0.070
Product anal.	...	...	...	...	...	...	...	...	0.025-0.080
Aluminum, max:
Heat anal.	...	...	...	...	...	...	...	...	0.04
Product anal.	...	...	...	...	...	...	...	...	0.05

The carbon content for plates over 5 in. (125 mm) in thickness is 0.17 max on product analysis.

Reading the chemistry table: “Heat anal.” is the ladle analysis and “Product anal.” is a check analysis on the finished plate, which has slightly wider limits. Although some row headings say “max”, ranges are given where the standard sets both limits. The “A” after the Grade 22 and 21 carbon values refers to the 0.17% note below the table. Grades 2, 21 and 7 are shown for completeness but are not part of this page’s range; if you need one of them, check that the edition you order to still lists it.

Tensile Requirements For Class 1 Plates

	Grade 2 and 12	Grade 11	Grade 22, 21, 5, 7, 9
Tensile strength, ksi [MPa]	55 to 80 [380 to 550]	60 to 85 [415 to 585]	60 to 85 [415 to 585]
Yield strength min. ksi [MPa]	33	35	30
Elongation in 8 in. [200 mm], min. %A	18	19
Elongation in 2 in. [50 mm], min. %A	22	22	18
Reduction of area, min %			45B 40C

A. See Specification A 20/A 20M.

B. Measured on round test specimens.

C. Measured on flat specimen

Metric yield values: 33 ksi is 230 MPa, 35 ksi is 240 MPa and 30 ksi is 205 MPa. “45B / 40C” means 45% reduction of area on round specimens and 40% on flat specimens. Grade 91 is not listed in Class 1 because it has a single strength level, shown in the Class 2 table.

Tensile Requirements For Class 2 Plates

	Grade 2	Grade 11	Grade 12	Grade 22, 21, 5, 7, 9	Grade 91
Tensile strength, ksi [MPa]	70 to 90 [485 to 620]	75 to 100 [515 to 690]	65 to 85 [450 to 585]	75 to 100 [515 to 690]	85 to 110 [585 to 760]
Yield strength min. ksi [MPal]/(0.2% offset)	45 [310]	45 [310]	40 [275]	45 [310]	60 [415]
Elongation in 8 in. [200 mm], min. %B	18	18	19	...	...
Elongation in 2 in. [50 mm], min. %B	22	22	22	18	18
Reduction of area, min %	...	...	...	45C 40D	...

A. Not applicable to anneaied material.

B. See Specification A 20/A 20M. elongation adjustments

C. Measured on round test specimen

D. Measured on flat specimen

Notes on this table: “[MPal]” should read [MPa], and “anneaied” should read annealed: Class 2 properties are not obtained with annealed plate. These are specification minimums and ranges; the certificate shows the results for each heat and plate.

Standards and Order References

Reference	Role in an SA 387 order
ASTM A387 / A387M	Product specification: grades, classes, chemistry, heat treatment and tensile requirements
ASME SA-387	ASME Section II Part A adoption of A387 for code construction; state the code edition
ASTM A20 / A20M	General requirements: tolerances, test methods, marking and supplementary requirements such as simulated PWHT (S3) and impact tests (S5)
ASME Section II Part D	Allowable design stresses by grade, class and temperature, used by the designer

Plate Sizes, Tolerances and Delivery Condition

Thicknessup to 100 mm
Widthup to 2500 mm
Lengthup to 12000 mm

These are the chrome moly plate dimensions listed on our Chrome Moly Plates page; ask for availability against the exact grade, class and size. Thickness, width, length and flatness tolerances follow ASTM A20 / A20M. State the heat-treatment condition: normalized and tempered, or annealed for Class 1 where forming needs it.

Applications and Service Requirements

Chemical and petrochemical processing plant — Refineries and chemical plants

Power generation plant with gas turbine units and cooling tower — Power plants

Application	Grades to evaluate	Selection input
Hydroprocessing reactors and separators	Grade 22, Grade 11	Hydrogen partial pressure, temperature, thickness and PWHT
Boiler drums, headers and steam vessels	Grade 11, Grade 12, Grade 22, Grade 91	Design temperature, creep requirements and code
Heat exchanger shells and process vessels	Grade 11, Grade 12	Process temperature, pressure and forming
High-sulfur refinery service	Grade 5, Grade 9	Sulfur content, temperature and oxidation

These are material application examples, not a list of supplied projects.

Cut-to-Size Plates, Welding and PWHT

SA 387 plate can be cut to size and shape through our cutting services, including plasma cutting. Send the grade, class, thickness, drawing, quantity and tolerances, and say whether edges will be bevelled or welded: thermally cut Cr-Mo edges can harden, so preheating before cutting and grinding the edge are often required.

Welding consumables

Matching low-hydrogen consumables are normally used, for example E8018-B2 / ER80S-B2 for Grades 11 and 12, E9018-B3 / ER90S-B3 for Grade 22 and B91-type consumables for Grade 91. The qualified WPS sets the consumable.

Preheat and PWHT

Grades 11 and 12 are ASME P-No. 4, Grade 22 is P-No. 5A, Grades 5 and 9 are P-No. 5B and Grade 91 is P-No. 15E. Preheat and PWHT follow the code and WPS; give us the PWHT cycle if test coupons need simulated PWHT.

Testing, Material Documents and Traceability

State the certificate type and test scope with the RFQ. A mill test certificate for the plate and the company's quality-system certification are different documents.

Requirement	What to identify in the order
Material certificate	EN 10204 3.1 or 3.2 showing specification and edition, grade, class, heat treatment, chemistry and tensile results
Simulated PWHT	A20 supplementary requirement S3 with your PWHT temperature, time and number of cycles
Impact and ultrasonic tests	Charpy test temperature and energy (S5); UT standard and acceptance level for thick plate
Hydrogen service	Any step-cooling, embrittlement-factor or hardness limits your specification sets, for example for Grade 22 reactors
Traceability and inspection	Heat and plate number on plate and certificate, transfer to cut pieces, and buyer or third-party inspection

Review our Quality Policy and include your project inspection requirements in the enquiry.

Why Source SA 387 Plates from Champak Industries?

Our Mumbai service centre supplies SA 387 and A387 plate in every grade and class listed above, with a separate page for each so you can check requirements before you enquire. Plate can be cut to size and shape, and one enquiry can cover material, cutting and documents for India or export. See Chrome Moly Plates for the full chrome moly range and Company Profile for the wider supply offering.

SA 387 Plate Price and Quotation

Price depends on the grade, class, thickness, plate size, quantity, heat treatment, supplementary tests, cutting, inspection, packing and destination. Higher-alloy grades, Grade 91 and heavy plates with simulated PWHT or hydrogen-service testing cost more. Send a complete requirement for a quotation stating the price basis, tax/freight treatment and validity.

Domestic Dispatch and Export Requirements

For domestic orders, give the delivery address and unloading requirements. For exports, specify the destination, delivery terms, packing and marking instructions and the shipping documents required, with your required delivery date.

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We Supply SA 387 Chrome Moly Steels in listed cities in India

Mumbai, Lucknow, Coimbatore, Imphal, Mysore, Ratlam, Delhi, Kanpur, Darjeeling, Jalandhar, Nagpur, Solapur, Kolkata, Allahabad, Dehradun, Jammu, Nashik, Srinagar, Chennai, Ahmedabad, Faridabad, Jamshedpur, Bhadravati, Chattisgarh, Durgapur, Asansol, Hospet, Bellary, Visakhapatnam, Nellore, Surat, Bangalore, Chandigarh, Ghaziabad, Jhansi, Patna, Siliguri, Hyderabad, Stainless Steel Pipe dealers in Salem, Amritsar, Noida, Kochi (Cochin), Mangalore, Indore, Vadodra, Bhubaneswar, Bikaner, Bhavnagar, Tirupur, Ankleshwar, Warangal, Agartala, Thoothukudi, Stainless Steel Pipe suppliers in Pune, We offer fastest delivery in India including Thiruvanthapuram, Jaipur, Aizawl, Guwahati, Kozhikode, Raipur, Vishakhapatnam, Jabalpur, Bhopal, Gwalior, Ludhiana, Rajahmundry, Thane, Agra, Bhubaneshwar, Gurgaon, Madurai, Rajkot, Varanasi, Bhilai, Haridwar, Meerut, Ranchi, Ahmednagar, Akola, Amravati, Aurangabad, Baramati, Beed, Bhandara, Bhiwandi, Buldhana, Chandrapur, Chimur, Dahanu, Dhule, Dindori, Erandol, Gadchiroli, Hatkanangle, Hingoli, Ichalkaranji, Jalgaon, Jalna, Karad, Khed, Yavatmal, Kolaba, Kolhapur, Kopargaon, Latur, Malegaon, Mumbai, Nagpur, Nanded, Nandurbar, Nashik, Osmanabad, Pandharpur, Parbhani, Rajapur, Ramtek, Ratnagiri, Raver, Sangli, Satara, Shirdi, Shirur, Solapur, Thane, Wardha, Washim, Andhra Pradesh, Jammu and Kashmir, Nagaland, Uttarakhand, Haryana, Lakshadweep, Arunachal Pradesh, Jharkhand, Odisha, West Bengal, Himachal Pradesh, Assam, Karnataka, Punjab, Andaman and Nicobar Islands, Puducherry, Bihar, Kerala, Rajasthan, Chandigarh, Meghalaya, Chhattisgarh, Madhya Pradesh, Sikkim, Dadar and Nagar Haveli, Mizoram, Goa, Maharashtra, Tamil Nadu, Daman and Diu, Tripura, Gujarat, Manipur, Telangana, Delhi, Uttar Pradesh in India.

Location note: The phrases “Stainless Steel Pipe dealers in Salem” and “Stainless Steel Pipe suppliers in Pune” in the list above refer to the cities of Salem and Pune. This page does not cover stainless steel pipe.

We Supply and Export in listed Country

United States of America, Malaysia, UAE, Indonesia, Saudi Arabia, Iran, Qatar, India, China, United Kingdom, Singapore, Canada, Thailand, South Korea, Turkey, Philippines, Egypt, Germany, Italy, Japan, Russia, Vietnam, Australia, South Africa, Portugal, Morocco, Costa Rica, Kazakhstan, Netherlands, Mexico, Brazil, France, Spain, Taiwan, Nigeria, Bangladesh, Kuwait, Iraq, Ukraine, Poland, Jordan, Romania, Oman, Hong Kong, Venezuela, Colombia, Norway, Chile, Trinidad & Tobago, Greece, Czechia, Belgium, Sri Lanka, Cyprus, Angola, Myanmar (Burma), United Kingdom, Canada, South Korea, Thailand, Netherlands, Spain, Turkey, Australia, Mexico, Pakistan, Vietnam, Brazil, Philippines, France, Taiwan, Poland, South Africa, Russia, Nigeria, Kuwait, Czechia, Norway, Romania, Egypt, Oman, Sweden, Belgium, Hong Kong, Israel, Colombia, Switzerland, Denmark, Finland, Argentina, Venezuela, Peru, Ukraine, Chile, Bangladesh, Portugal, Ireland, Austria, Algeria, Greece, Iraq, New Zealand, Slovakia, Hungary, Kazakhstan, Slovenia, Lithuania, Serbia, Sri Lanka, Bahrain, Bulgaria, Morocco, Tunisia, Croatia, Jordan, Ecuador, Trinidad & Tobago, Estonia, Azerbaijan, Ghana, Lebanon, Cyprus, Dominican Republic, Latvia, Libya, Costa Rica, Cambodia, Macedonia (FYROM), Belarus, Jamaica, Palestine, Turkmenistan

Frequently Asked Questions About SA 387 Chrome Moly Steels

What is SA 387 steel?

SA 387 is the ASME code designation of ASTM A387: chromium-molybdenum alloy steel plate for welded boilers and pressure vessels in elevated-temperature service.

Is ASME SA387 the same as ASTM A387?

ASME adopts ASTM A387 as SA-387, so the requirements match the adopted edition unless ASME notes a difference. State which designation and edition you need, because the certificate must show it.

Which grades and classes are available?

Grades 5, 9, 11, 12 and 22 in Class 1 and Class 2, and Grade 91, each with an ASME SA387 and an ASTM A387 page.

What is the difference between Class 1 and Class 2?

Class 2 has higher minimum tensile and yield strength than Class 1 for the same grade. Class 1 may be annealed for better formability; Class 2 is normalized and tempered.

Why does Grade 91 have no separate Class 1 and Class 2?

Current A387 editions supply Grade 91 at a single tensile level: 85–110 ksi tensile and 60 ksi minimum yield. Order it against the edition in your purchase specification.

Which SA 387 grade is used for hydrogen service?

Grade 22 is the most common choice for hydroprocessing reactors, with Grade 11 at lower temperatures. The grade is normally checked against API 941 for the operating temperature and hydrogen partial pressure.

What is the difference between heat and product analysis?

Heat analysis is taken from the molten steel; product analysis is a check on the finished plate and has slightly wider limits, as shown in the chemistry table.

Should I order simulated PWHT testing?

Order it when the fabricated vessel will be post-weld heat treated and your code or specification requires proof that the plate meets its properties afterwards. Give the PWHT temperature, time and number of cycles.

Can SA 387 plate be cut to size?

Yes. Send the drawing, thickness, quantity, tolerances and edge preparation. Cr-Mo plate often needs preheating before thermal cutting.

How do I obtain a price and delivery offer?

Send the specification and edition, grade, class, condition, dimensions, quantity, supplementary tests, cutting needs, destination and required date through the form below, by WhatsApp or by phone.

SA 387 Chrome Moly Steels