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Stainless Steel · Bars · ASTM A276 / A479 310S

SS 310S Stainless Steel Bars

In short: 310S bar to ASTM A276 or A479 is used for furnace rollers, hangers, bolts, conveyor pins and fixtures that work inside hot furnaces.

S31008
UNS number
7.9
density, g/cm³
3.1 / 3.2
EN 10204 certificates
4
SS 310S product forms
Quote SS 310S bars →Sizes and weights
SS 310S round bar weightCalculated at 7.9 g/cm³: 6 0.22 kg/m; 8 0.40 kg/m; 10 0.62 kg/m; 12 0.89 kg/m; 16 1.59 kg/m; 20 2.48 kg/m; 25 3.88 kg/m; 32 6.35 kg/m; 40 9.93 kg/m; 50 15.51 kg/m; 63 24.63 kg/m; 75 34.90 kg/m; 90 50.26 kg/m. SS 310S round bar weight7.9 g/cm³ 6: 0.22 kg/m68: 0.40 kg/m810: 0.62 kg/m1012: 0.89 kg/m1216: 1.59 kg/m1620: 2.48 kg/m2025: 3.88 kg/m2532: 6.35 kg/m3240: 9.93 kg/m4050: 15.51 kg/m5063: 24.63 kg/m6375: 34.90 kg/m7590: 50.26 kg/m90 50.3 Round bar diameter, mm · kg/m
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why SS 310S in bars

Low carbon for weldabilityTop oxidation resistance among standard stainless gradesSigma-phase risk in long service at 650–900 °CStable austenite, tough at low temperatures

Load-bearing furnace parts need oxidation resistance and enough strength at temperature; 310S bar is machined or forged into rollers, pins and hangers.

Thermal cycling loosens scale; generous clearances help machined parts keep working.

Specification

How to specify SS 310S bars

Round bars about 3 – 500 mm diameter; hex 6 – 100 mm A/F; square and flat sections to order; lengths 3 – 6 m random or cut to size

SS 310S bars ASTM A276 / A479 310S
SS 310S bars: ASTM A276 / A479 310S
Specification
ASTM A276 / A479 310S
UNS
S31008
EN / W.Nr.
1.4845
Shapes
Round, square, flat

Sizes and weights

SS 310S bars sizes, weighed at 7.9 g/cm³

Other sizes on request. For general bars information, such as manufacturing routes and end finishes, see the bars guide.

SS 310S bar weights at 7.9 g/cm³ (kg/m)
Size mmRoundHex A/FSquare
60.2230.2460.284
80.3970.4380.506
100.6200.6840.790
120.8930.9851.138
161.5881.7512.022
202.4822.7373.160
253.8784.2764.938
326.3547.0068.090
409.92710.94612.640
5015.51217.10419.750
6324.62627.15431.355
7534.90138.48344.438
9050.25855.41563.990
10062.04668.41479.000
12596.948106.897123.438
150139.605153.932177.750
200248.186273.656316.000

Chemistry

SS 310S composition

UNS
S31008
EN / W.Nr.
1.4845 · X8CrNi25-21
Density
7.9 g/cm³
SS 310S Stainless Steel chemical composition, % (ASTM A240)
ElementLimit, %Why it matters
C0.08 max
Mn2.00 max
P0.045 max
S0.030 max
Si1.50 max
Cr24.0 – 26.0
Ni19.0 – 22.0

Limits per ASTM A240; other product forms and specifications differ slightly. Your order's specification and edition govern.

0%5%10%15%20%25%30% Mn Si Cr Ni
Main alloying elements of SS 310S Stainless Steel: bars show the permitted range (ASTM A240).

Questions

About SS 310S bars

Is 310S bar used for furnace bolts?

Yes, for fixtures and hangers in oxidising atmospheres.

A276 or A479 310S bar?

A479 for pressure parts; A276 for general furnace components.

From enquiry to dispatch

How a SS 310S bars order runs

  1. 01 EnquiryGrade, specification, size, quantity
  2. 02 ReviewChecked against your standard
  3. 03 InspectPMI, dimensions, TPI if required
  4. 04 CertifyEN 10204 3.1 / 3.2, heat traceable
  5. 05 ShipPacked and documented for the destination

Need SS 310S bars?

Send size, quantity, specification and destination. We reply with availability, certificates and delivery.

Request a quote →SS 310S grade page
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