AISI 410 Round Bars

AISI 410 hot rolled round bar is a martensitic stainless bar, hardened by heat treatment, used for shafts, valve parts and fasteners.

16 to 125 mm Martensitic stainless steel Made to order

HOT ROLLED ROUND BARS

AISI 410 hot rolled round bar

AISI 410 hot rolled round bar is the basic martensitic stainless steel rolled to round section, in diameters from 16 to 125 mm. Chromium between 11.5 and 13.5 percent gives the bar its stainless behaviour, and carbon from 0.08 percent lets it harden when it is austenitised, quenched and tempered. That is why it is chosen ahead of the ferritic and austenitic stainless grades, which stay soft whatever heat treatment they see. It carries less carbon than AISI 420, so it reaches a lower hardness but keeps more toughness and is easier to weld. Unlike AISI 416 it has no added sulphur, so it machines more slowly and carries no sulphide inclusions across the section. Laxcon Steels rolls the bar to order.

The bar is supplied annealed for machining, or hardened and tempered to an agreed strength. ASTM A276 sets the annealed minima for 410 at 485 MPa tensile and 275 MPa yield. The steel is magnetic in every condition. Machining is done in the annealed condition and the part is hardened afterwards, because quenched 410 is hard on tooling. Welding calls for preheat and for tempering after the weld, since the weld zone hardens as it cools. Corrosion resistance holds in air, fresh water and steam, and improves as the surface is ground and polished. Bar of this grade goes into pump and valve shafts, valve stems and trim, bolting and studs, and blanks that customers forge into turbine and compressor parts.

Composition limits in weight percent are carbon 0.08 to 0.15, manganese 1.0 maximum, sulphur 0.03 maximum, phosphorus 0.04 maximum, silicon 1.0 maximum, chromium 11.5 to 13.5 and nickel 0.75 maximum.

SPECIFICATION

AISI 410 hot rolled round bar supply conditions

Size range: 16 mm - 125 mm (5/8" - 5")
Length: Up to 8 metres
Tolerances: ASTM A484, EN10060
Heat treatment: Soft annealing; oil or water quenching and tempering
Grade: AISI 410 (410, SUS 410, 1.4006, S41000)
Family: Martensitic stainless steel
Supply: Made to order in this grade; every published size of the form

Composition of AISI 410

Element	Symbol	Minimum %	Maximum %
Carbon	C	0.08	0.15
Manganese	Mn		1.0
Sulphur	S		0.03
Phosphorus	P		0.04
Silicon	Si		1.0
Chromium	Cr	11.5	13.5
Nickel	Ni		0.75

Composition, weight percent, balance iron. From the Laxcon Steels grade reference.

Equivalents of AISI 410

Standard	Designation
UNS	S41000
EN number	1.4006
JIS	SUS 410

Equivalence means nearest counterpart, not identity: each standards body sets its own composition window, so the limits of the standard named on the order govern.

Governing standards

EN 10088-3: Stainless steels: technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products for general purposes. Composition, heat treatment condition and mechanical properties per grade.
EN 10060: Hot rolled round steel bars for general purposes: dimensions and tolerances on shape and dimensions.
ASTM A276/A276M: Stainless steel bars and shapes: composition, condition, mechanical properties and finish designations for hot-finished and cold-finished bar.
ASTM A484/A484M: General requirements for stainless steel bars, billets and forgings: permissible variations in dimensions, straightness, weight and length, and the test and marking requirements every bar order inherits.
ASTM A479/A479M: Stainless steel bars and shapes for use in boilers and other pressure vessels: the bar specification a pressure-part drawing calls for.
ASTM A314: Stainless steel billets and bars for forging.
NACE MR0175 / ISO 15156: Materials for use in H2S-containing environments in oil and gas production: the sour-service limits on hardness and condition.
EN 10204: Metallic products, types of inspection documents: the 2.2 test report and the 3.1 and 3.2 inspection certificates a purchase order can call for.

Weight per metre

Diameter (mm)	kg per metre	Metres per tonne
16	1.59	629.5
17	1.79	557.6
18	2.01	497.4
19	2.24	446.4
20	2.48	402.9
21	2.74	365.4
22	3.00	333.0
23.2	3.34	299.4
24	3.57	279.8
25	3.88	257.9
26	4.19	238.4
27	4.52	221.1
28	4.86	205.6
30	5.58	179.1
32	6.35	157.4
34	7.17	139.4
36	8.04	124.4
37	8.49	117.7
38	8.96	111.6
40	9.93	100.7
42	10.95	91.4
45	12.57	79.6
47	13.71	73.0
48	14.30	69.9
50	15.51	64.5
53	17.43	57.4
56	19.46	51.4
57.5	20.52	48.7
60	22.34	44.8
63	24.63	40.6
66	27.03	37.0
67.5	28.27	35.4
70	30.40	32.9
73.5	33.52	29.8
75	34.90	28.7
77.5	37.27	26.8
80	39.71	25.2
83	42.75	23.4
85	44.83	22.3
88	48.05	20.8
90	50.26	19.9
93	53.67	18.6
95	56.00	17.9
98	59.59	16.8
100	62.05	16.1
105	68.41	14.6
106	69.72	14.3
110	75.08	13.3
115	82.06	12.2
120	89.35	11.2
125	96.95	10.3

Density 7.90 g/cm³, diameter squared x 0.006205. Sizes are the published range at the nominal diameters shown.

Ordering AISI 410 hot rolled round bar

An enquiry for this grade states the grade and governing standard, AISI 410 to ASTM A276 or EN 10088-3, the condition, annealed or hardened and tempered, the diameter with the tolerance class to ASTM A484 or EN 10060, the length, the surface, black, spot ground or fully ground, the quantity, the test certificate type to EN 10204, and any ultrasonic test or PMI check required.