Carbon & Alloy Steel Specifications

EN8
0.4% medium carbon steel. A genereal purpose steel for applications requiring added strength and superior tensile properties to mild steel specifications.

EN9
0.5% carbon steel giving higher tensile than EN8. Can be induction or flame hardened.

EN14
A carbon manganese steel.

EN16
A low alloy high tensile steel.

EN19
1% chromium molybdenum high tensile steel. Suitable for highly stressed applications where greater strength is required.

EN24
Nickel chromium molybdenum high tensile steel. Has good wear and shock resistance and is suitable for tensile ranges up to 1550 N/mm².

EN26
A 2.5% nickel chromium molybdenum high tensile steel.

EN30B
4¼% nickel steel. Achieves a good through hardness with air or oil hardening. It is capable of taking a good polish and is widely used as a plastic mould steel.

EN31
High carbon alloy steel which achieves a high degree of hardness with compressive strength and abrasion resistance.

EN32
Special mild case hardening steel which can provide a hard wearing surface with a tough core.

EN36
Nickel chromium case hardening steel. Give a very hard surface with a strong core and retaining a high degree of toughness.

EN40B
3% chromium molybdenum nitriding steel. It will achieve a good core strength with a hard nitrided surface. The nitriding process leaves the component scale free.

EN41
Similar nitriding specification to EN40B but with improved nitriding characteristics.

EN43
Unalloyed medium carbon spring steel type specification.

EN45
Silicon mangenese alloy spring steel.

EN47
Tough oil quenching spring steel which, when heat treated, offers good wear resistance.

SAE 8620
A low alloy case hardening steel.

AISI 4140
Chromium molybdenum high tensile steel. Supplied 18-22HRc (Hardness Rockwell)

AISI 4145
Chromium molybdenum high tensile steel similar to 4140. Supplied 30-36HRc

AISI 4130
Chromium molybdenum steel supplied 18-22HRc. Lower carbon content that AISI 4140.

AISI 6150
A chromium vanadium spring steel type steel.

Read More......

ASME Specifications 3

SA-226*
Covers electric-resistance-welded carbon steel boiler and superheater tubes for highpressure service. The tubing sizes and thicknesses usually furnished to this specification are ½ in. to 5 in. O.D. and 0.085 in. to 0.360 in. ,inclusive in minimum wall thickness.

SA-234**
Covers wrought carbon steel and alloy steel fittings of seamless and welded construction for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. The term ”fitting” applies to butt-welding, socket-end, and threaded end parts such as 45-deg and 90 deg elbows. 180-deg return bends, caps, tees,reducers, lap-joint stub ends, and other types as covered by the latest revision of ANSI B16.9, MSS SP48, and ANSI B16.11.

SA-249*

Covers welded tubes made from the austenitic steels with various grades intended for such use as boiler, superheater, heat exchanger, or condenser tubes. Grades TP 304H, TP 316H,TP 321 H,TP 347H, and TP 348H are modifications of grades TP 304, TP 316, TP 321., TP 347, and TP 348. and are intended for high-temperature Service such as for superheaters and reheaters. The tubing sizes and thickness usually furnished to this specification are 1/8 in. in inside diameter to 5 in. in outside diameter and 0.015 in. to 0.320 In., incl. in minimum wall thickness.

SA-250**
Covers several grades, designated T 1, T 1a. T lb. of electric-resistance-welded, carbon-molybdenum alloy-steel boiler and super heater tubes. The tubing sizes and thicknesses usually furnished to this specification are T/2 in. to 5 in. O.D. and 0.035 in. to 0.320 in., inclusive in minimum wall thickness.

SA-268**
Covers nine grades of stainless steel tubing for general corrosion-resisting and high-temperature service. These grades are commonly known as the “straightchromium” types and are characterized by being ferro-magnetic. Two of these grades, TP 410 and TP 329 (Table 1). are amenable to hardening by heat treatment, and the high- chromium. ferritic alloys are sensitive to notch-brittle ness on slow cooling to ordinary temperatures. These features should be recognized in the use of these materials. Grade 409 may be ordered with no final heat treatment provided the purchase order so specifies and the material meets all of the other requirements of the specifications.

SA-312**
Covers seamless and welded austenitic steel pipe intended for high-temperature and general corrosive service. Sixteen grades are covered. Grades TP 304H,TP 316H, TP 321H, TP 347H and TP 387H are modification of Grades TP 304, TP 316, TP 321, TP347 and TP 387, and are intended for hightemperature service.

SA-333**
Covers nominal (average) wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures, Several grades of ferritic steel are included. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties

SA-334* Covers several grades of seamless and welded carbon and alloy-steel tubes intended for use at low temperatures. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse effect on lowtemperature impact properties.

*Identical with ASTM Specifications
**Identical with ASTM Specifications with revisions or additions

Independent Pipe and Supply Corp

Read More......

ASME Specifications 2

SA-155**
Covers electric-fusion-welded steel pipe suitable for high-pressure service and for use at high, intermediate, or lower temperatures, depending upon grade of material specified in outside diameters 16 in. and larger with wall thicknesses up to 3,000 in. incl.

SA-178*
Covers electric-resistance-welded tubes made of carbon steel and intended for use as boiler tubes, boiler flues, superheater flues, and safe ends. The tubing sizes and thicknesses usually furnished to this specification are ½ in. to 5. in. O.D. and 0.035 in. to 0.320 in. inclusive in minimum wall thickness. SA-179* Covers seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. Covers tubes 1/8 to 3 in., incl. In outside diameter.

SA-181*
Covers forged or rolled steel pipe flanges, forged fittings and valves and parts for general service. Two grades or material are covered, designated as grades I and II, respectively, and are classified in accordance with their chemical and physical properties. 

SA-182* Covers forged or rolled alloy-steel pipe flanges, forged fittings and valves and parts intended for high-temperature service. The term “forgings” used in this specification shall be understood to cover one of all of the products mentioned above, either forged or rolled.

SA-192*
Covers seamless carbon steel boiler and superheater tubes for high-pressure service. The tubing sizes and thicknesses usually furnished to this specification are ½ in. to 7 in. O.D. and 0.085 in. to 1.000 in., inclusive in minimum wall thickness.

SA-199*
Covers several grades of chromiummolybdenum and chromium-molybdenum silicon seamless cold-drawn intermediate alloy steel tubes for heat exchangers, condensers, and similar heat transfer apparatus. The tubing Sizes usually furnished to this specification are 1/8 in. to 3 in. O.D. SA-209* Covers several grades of seamless carbonmolybdenum alloy-steel boiler and superheater tubes. Covers tubes ½ to 5 in., incl., in minimum wall thickness.

SA-210*
Covers seamless medium-carbon steel boiler tubes and boiler flues, including safe ends, arch and stay tubes, and superheater tubes. The tubing sizes and thicknesses usually furnished to this specification are ½ in. to 5 in. O.D. and 0.035 in. to 0.500 in.. inclusive in minimum wall thickness. SA-213* Covers seamless ferritic and austenitic steel boiler and superheater tubes and austenitic steel heat exchanger tubes, designated Grades T 5, TP 304, etc. These steels are listed in Tables I and II, respectively. Grades IP 304 H, TP 316 H. TP 321 H. TP 347 H, and IP 348 H are modifications of Grades TP 304, TP 316, TP 321. TP 347, and TP 348. and are intended for hightemperature service such as for superheaters and reheaters. The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. in inside diameter to 5 in. in outside diameter and 0.015 in. to 0.500 in., inclusive, in
minimum wall thickness.

SA-214*
Covers electric-resistance-welded carbon steel tubes to be used for heat exchangers, condensers, and similar heat-transfer apparatus. The tubing sizes usually furnished to this specification are to 3 in. O.D. inclusive.

*Identical with ASTM Specifications
**Identical with ASTM Specifications with revisions or
additions

Independent Pipe and Supply Corp

Read More......

ASME Specifications 1

SA-36*
Covers carbon steel shapes, plates, and bars of structural quality for use in riveted, bolted. Or welded construction of bridges and buildings, and for general structural purposes. When the steel is used in welded construction, welding procedure shall be suitable for the steel and the intended service.

SA-53*
Covers seamless and welded black and hotdipped galvanized steel pipe in nominal sizes 1/8 in. to 26 in., incl. with nominal (average) wall thickness. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.
1.2 Pipe may be furnished in the following types and grades;
1.2.1 Type F—Furnace-butt welded, continuous welded,
1.2.2 Type E—Electric-resistance welded, Grades A and B, and
1.2.3 Type S—Seamless, Grades A and B.
1.3 Pipe ordered under this specification is suitable for welding, and suitable for forming operatings involving coiling, bending and flanging, subject to the following qualifications;
1.3.1 Type F is not intended for flanging.
1.3.2 When Types S and E are required for close coiling or cold bending, Grade A should be specified. This provision is not intended to prohibit the cold bending of Grade B pipe.
1.3.3 When pipe is required for close coiling, this should be specified on the order.
1.3.4 Type E may be furnished either nonexpanded or cold expanded at the option of the manufacturer. When pipe is cold expanded, the amount of expansion shall not exceed 1.5% of the O.D. pipe size.

SA-105
Covers forged carbon steel piping components for ambient and highertemperature service in pressure systems. Included are flanges, fittings, valves and similar parts to specified dimensions or to dimensional standards such as those ANSI
and API specifications.


SA-106**
Covers seamless carbon steel pipe for hightemperature service in nominal sizes 1/8 in. to 26 in. inclusive. With nominal(average) wall thickness as given in ANSI B36.10. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of these specifications. Pipe ordered under this specification shall be suitable for bending, flanging and similar forming operations.

A-120
This specification covers black and hotdipped galvanized welded and seamless steel pipe in nominal sizes 1/8in. to 16 in. inclusive with nominal (average) wall thickness. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification . Pipe ordered under this specification is intended for ordinary uses in steam,water,gas, and air lines, but is not intended for close coiling or bending, or hightemperature service. No to this specification, except hydrostatic test which shall be made at the mills, as this specification is intended to cover pipe purchased mainly from jobber’s stocks.

SA-134**
Covers electric-fusion(arc)-welded straight seam or spiral seam steel plate pipe 16 in. and over in diameter (inside or outside as specified by purchaser), with wall thicknesses up to ¾ in.,inclusive. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of these specifications. The pipe is intended for conveying liquid, gas or vapor.

SA-135*
Covers two grades of electric-resistancewelded steel pipe in nominal sizes 2 in. to 30 in. inclusive with nominal(average) wall thickness up to 0.500 in. (12.70 mm), inclusive and in nominal sizes ¾ to 5 in. inclusive with nominal(average) wall thickness 0.083 in. (2.11 mm) to 0.134 in. (3.40mm) depending on size. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification. The pipe is intended for conveying liquid, gas or vapor: and only Grade A is adapted for flanging and bending.

*Identical with ASTM Specifications
**Identical with ASTM Specifications with revisions or
additions

Independent Pipe and Supply Corp

Read More......