ASTM A1017 Grade 122 Steel Plate | A1017 Gr.122 12Cr-2W Vessel Plate

ASTM A1017 Grade 122, also searched as A1017 Gr.122, A1017GR122, A1017-122, SA-1017 Grade 122, SA1017 Gr.122, 12Cr-2W plate and HCM12A plate, is the 12Cr-0.40Mo-2.00W pressure-vessel grade in ASTM A1017/A1017M. That book covers chromium-molybdenum-tungsten plates for welded boilers and vessels at elevated temperature. General requirements follow ASTM A20 / ASME SA-20. The Code twin is SA-1017 Grade 122.

This page is not A1017 Grade 92. Grade 92 is 9Cr-1.75W. This page is not ASTM A387 Grade 91 Class 2. Grade 91 is 9Cr-1Mo-V-Nb. This page is not ASTM A387 Grade 911 Class 2. Grade 911 is 9Cr-1Mo-1W. This page is not A1017 Grade 23.

Tensile is 90 ksi / 620 MPa minimum. Grade 122 does not use the 90–120 ksi band written for Grades 911 and 92. Yield is 58 ksi / 400 MPa min. Elongation is 20% in 2 in. Hardness on Grade 122 shall not exceed 250 HB. Delivery is normalized and tempered. Typical austenitize is 1900–1975 °F / 1040–1080 °C. Typical temper for Grade 122 is 1350–1470 °F / 730–800 °C. A1017 does not split Grade 122 into Class 1 and Class 2.

SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). We buy this grade from qualified Chinese mills, check Cr, W, V and Nb on the heat analysis, record N+T and hardness on the certificate, and ship plate to fabricators in the USA, Europe, Middle East, Southeast Asia, Africa and South America.

Related category pages: ASTM A387, ASME SA387 and pressure vessel steel plates.

9Cr sisters belong on ASTM A387 Grade 91 Class 2 and EN 10028-2 X10CrMoVNb9-1. Those are not Grade 122.

Grade 122 is the 12Cr member of A1017. Chromium sits near 10.0–11.5%, not the 8.5–9.5% band of Grades 911 and 92.

Heat Analysis and Product Analysis — ASTM A1017 Grade 122

If chromium is 8.50–9.50% and tungsten is about 1.75%, the heat is Grade 92, not 122. If chromium is 8.50–9.50% and molybdenum is 0.90–1.10%, the heat is Grade 911. SHH STEEL prints heat analysis on every certificate. Density is 7.85 g/cm³.

Buyers search A1017 Gr.122 mechanical properties, A1017GR122 yield, 12Cr-2W tensile and SA-1017 Grade 122 hardness.

Tensile, Yield and Hardness — ASTM A1017 Grade 122

Grades 911 and 92 use 90–120 ksi / 620–840 MPa. Grade 122 uses a minimum only. Do not print 840 MPa as a Grade 122 cap unless the purchase order writes its own window. Grade 23 is 510–690 MPa / 400 MPa / 220 HB.

There is no official one-to-one worldwide swap for A1017 Gr.122. What buyers compare is the 12Cr-2W / HCM12A idea.

In the United States the current plate name is ASTM A1017 Grade 122. The Code name is SA-1017 Grade 122. Tube and pipe jobs may still say 12Cr-2W or HCM12A. Plate still has to meet A1017 when the specification is plate. ASTM A387 Grade 91 Class 2 is 9Cr, not 12Cr.

In Europe there is no daily EN 10028-2 twin written as Grade 122. EN 10028-2 X10CrMoVNb9-1 is P91. See EN 10028-2.

Dual marking is possible only when both books are fully met.

Buyers pick A1017 Gr.122 when a boiler, header or high-temperature vessel file wants 12Cr-2W chemistry and the 620 MPa minimum table. Search phrases such as A1017GR122, A1017 Grade 122, SA-1017 Grade 122, 12Cr-2W plate and HCM12A plate all point here.

It is not a substitute for A1017 Grade 92. That grade is 9Cr-1.75W at 620–840 MPa. It is not a substitute for ASTM A387 Grade 91 Class 2. That grade is 9Cr without 2% W.

SHH STEEL supplies this plate to fabricators in the United States, Mexico, South America, Europe, the Middle East, Africa and Asia.

A1017 Grade 122 is killed 12Cr-0.40Mo-2.00W-V-Nb vessel plate at 620 MPa min. Treat welding as production welding, and as ASME Section I / Section VIII welding when the equipment is Code work.

Qualify to the applicable code. Consumables must match a 12Cr-2W family. A procedure written for ASTM A387 Grade 91 Class 2 is P91, not Grade 122. A procedure written for Grade 92 is P92, not 12Cr. Preheat, interpass and PWHT must stay inside the qualified WPS. Grade 122 hardness is already capped at 250 HB; the weld procedure has to respect that cap if the file carries it into the weld zone. The fabricator owns the WPS. SHH STEEL can share mill heat data for that review.

Usual delivery from SHH STEEL for A1017 Gr.122 is normalized and tempered.

• Austenitize: 1040–1080 °C (1900–1975 °F)
• Temper for Grade 122: 730–800 °C (1350–1470 °F)

Grade 911 in the same book tempers at the tighter 740–780 °C band. Do not mix the two temper tables.

Annealed plate cannot be Grade 122. If the mill only annealed the heat, it cannot be certified A1017 Grade 122.

If the vessel will see PWHT, say so. Simulated PWHT on test coupons is worth naming. Extra simulation, 3.2 hold points or special NDE add time. Plan about two months when those extras are on the order.

The certificate lists ASTM A1017 Grade 122 and/or SA-1017 Grade 122 as the order named; heat number; heat analysis including Cr, W, V and Nb; tensile to the Grade 122 minimum table; hardness not over 250 HB; heat-treatment route and temperatures. Certificates may be EN 10204 3.1 or EN 10204 3.2.

Usual supply range from SHH STEEL for A1017 Gr.122 12Cr-2W vessel plate:

• Thickness: commonly 6 mm – 150 mm, thicker by mill agreement
• Width: 1500 mm – 4000 mm
• Length: 3000 mm – 12000 mm

Maximum thickness is limited by the ability of the composition to meet the Grade 122 tensile and 250 HB tables. 9Cr plate belongs on ASTM A387 Grade 91 Class 2 or A1017 Grade 92.

Dimensional limits for ASTM A1017 Grade 122 follow ASTM A20 / ASME SA-20 unless the purchase order names another table.

Typical thickness tolerance idea for A1017 Gr.122 (A20 / SA-20 reference)

Width on 1500–4000 mm plate is commonly held to about ±20–25 mm unless a tighter extra is named. Length on 3000–12000 mm plate is commonly held to about +50 / 0 mm or ±25 mm by mill practice. Flatness follows A20 / SA-20 unless a tighter class is written. SHH STEEL will not assume a zero-minus extra on A1017GR122 unless the order says so.

A1017 Grade 122 already defines chemistry, the 620 MPa minimum table, 250 HB max and N+T. Extra items still have to be written on the purchase order.

Book name. Write A1017 Grade 122, SA-1017 Grade 122, or both.

Heat-treatment route. Write normalized and tempered. Do not accept annealed plate.

Hardness after PWHT. Repeat the 250 HB cap on simulated coupons if the file needs it.

Charpy details. Write temperature, joules, location and orientation if impact is required.

Simulated PWHT. Name hold temperature, hold time and cooling rate on the coupon.

Product analysis. Especially C, Cr, Mo, W, V, Nb, P and S.

Through-thickness / Z-test. Name Z15, Z25 or Z35 when needed.

NDE. A20 / SA-20 ultrasonic extras, ASTM A435 or ASTM A578 as named.

Third-party witness. EN 10204 3.2 with SGS, TÜV, BV, ABS, CCS, DNV or the inspector named.

Identification and stamping. Heat number, A1017 Grade 122 / SA-1017 Grade 122, thickness and mill logo.

A1017 Grade 122 is the plate for a file that wants 12Cr-2W. It is the wrong plate for P91. That work is ASTM A387 Grade 91 Class 2. It is the wrong plate for P92. That work is A1017 Grade 92. It is the wrong plate for T23. That work is A1017 Grade 23.

SHH STEEL sources ASTM A1017 Grade 122 / SA-1017 Grade 122 from first-line Chinese mills and ships it on worldwide terms. Partner mills include Wuyang (Wugang), Angang, Shougang, Hanye, Anyang Iron & Steel, Baosteel, Xinyu, Xingcheng, Yongjin, Tsingshan, TISCO (Taiyuan), Jiuquan (JISCO), Lianzhong, Zhangpu and Baoxin, plus other qualified mills when the size or heat-treatment route requires it.

Mill test certificates are issued to EN 10204 3.1 as standard. EN 10204 3.2 is arranged when the order names a third-party hold point.

Usual stock and rolling thickness: 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 30 mm, 32 mm, 36 mm, 40 mm, 50 mm, 60 mm, 80 mm, 100 mm, thicker by mill agreement.

Processing: CNC or flame cutting, bevel, flattening, UT to the named class.

Trade terms: FOB Shanghai main, CIF destination available. Payment: TT, LC, or TT + LC.

Ocean time from Shanghai: US West 14–18 days; US Gulf 28–35 days; Rotterdam / Antwerp 28–35 days; Jebel Ali 18–25 days; Singapore 7–12 days; other ports quoted.

Third-party: SGS, TÜV, BV, ABS, CCS, GL, VL, DNV, RINA, NK, KR, or the inspector named

SHH STEEL is a global steel mill sourcing partner with mill partnerships in China. We supply ASTM, ASME, EN, DIN, JIS and GB steel to buyers in the United States, Europe, the Middle East, Southeast Asia, Africa and South America. Origin is mill-direct, China origin.

SHH STEEL has supplied steel plates to the USA, Mexico, Argentina, Peru, El Salvador, Spain, Netherlands, Germany, UAE, Saudi Arabia, South Africa, India, Thailand, Singapore, Vietnam, the Philippines, Japan and Korea.

Typical lead time: ex-stock 5–7 days; standard rolling / N+T about 45–60 days; simulated PWHT / 3.2 about 2 months.

Browse more product families on the products index.

Experience on this grade is simple: keep 12Cr and 2W on the certificate and keep Grade 122 away from 91, 92 and 911. SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) prices A1017 Gr.122 from first-line mills, reports 12Cr-0.40Mo-2.00W chemistry, records N+T and 250 HB max, and issues 3.1 as standard or 3.2 when specified.

We keep the grade on the order. A1017GR122 is not ASTM A387 Grade 91 Class 2. A1017 Grade 122 is not ASTM A387 Grade 911 Class 2. If the drawing says Grade 92 or Grade 91, we will not ship 122 and call 12Cr close.

ASTM A1017 Grade 122 Steel Plate is 12Cr-0.40Mo-2.00W pressure-vessel plate at 620 MPa min tensile, 400 MPa yield and 250 HB max. Whether the inquiry says ASTM A1017 Grade 122, A1017 Gr.122, A1017GR122, SA-1017 Grade 122, 12Cr-2W plate or HCM12A plate, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with Grade 122 chemistry, the Grade 122 tensile and hardness tables, recorded N+T delivery, and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies ASTM A1017 Grade 122 / A1017 Gr.122 12Cr-2W Vessel Plate to the USA, Mexico, South America, Europe, the Middle East, Africa and Asia for work that actually names this grade.

Contact SHH STEEL for mill rolling, stock inquiry, cutting, bevel, 3.2 inspection or a worldwide quotation.

ASTM A1017 Grade 122 Steel Plate, A1017 Gr.122, A1017GR122, 12Cr-2W plate, HCM12A plate, A1017 Gr.122 supplier, SHH STEEL