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Engineering data · Material

316 / 316L Stainless Steel Sensor Housings

By Yu Lianbo — Tooling Design Engineer

In one line

316 and 316L add molybdenum to the 304 chemistry, which is what makes them the usual choice where a housing lives in coolant, road salt or a corrosive condensate for the life of the vehicle.

Published configurations in this grade

57 published configurations use SUS 316, across the denso-fitment, denso-heat-shields, injector-egt, motorcycle, nox, o2-b, o2-d, o2-n, other series. Heights run 0.3-58.5 mm, outer diameters 1.20-21.60 mm, recorded wall thicknesses 0.40, 0.50, 0.60, 0.80 mm.

CodeSeriesHeightODIDWallMaterial
A001-4o2-b38.5 mm20.8 mm20 mm0.4 mmsus 316
A001-5o2-b38.5 mm20.8 mm20 mm0.4 mmsus 316
A001-8o2-b45.5 mm20.8 mm20 mm0.4 mmsus 316
B001-2o2-b48.5 mm12.4,15.3,17.7 mm11.5,14.3,16.7 mm0.5 mmsus 316
B001-2o2-b48.5 mm12.4,15.3,17.7 mm11.5,14.3,16.7 mm0.5 mmsus 316
B001-7o2-b48.5 mm12.5,15.3,17.7 mm11.5,14.3,16.7 mm0.5 mmsus 316
B002-4o2-b15 mm16 mm15 mm0.5 mmsus 316
B010o2-b42.3 mm12,13.1,18.5 mm11,12.1,17.5 mm0.5 mmsus 316
M070-1o2-b18 mm6.5,8.9,11.2,13.9 mm5.7,8.1,10.4 mm0.4 mmsus 316
L022-2nox54.5 mm12.2,15.25 mm11.2,14.25 mm0.5 mmsus 316
L023-2nox14.6 mm8.2,14.39 mm7.2,13.6 mm0.5 mmsus 316
L029nox19.5 mm10,13.9 mm9 mm0.5 mmsus 316
L031nox8.9 mm11.6 mm10.6 mm0.5 mmsus 316
L037nox45.4 mm12.2,15.25 mm11.2,14.25 mm0.5 mmsus 316
H007-3PTnox45.2 mm12.2,15.8 mm11.2,14.9 mm0.5 mmsus 316
C001o2-d58.5 mm11.4,14.2,16.8,21.5 mm10.4,13.2,15.8,19.1 mm0.5 mmsus 316
C005o2-d44 mm11.4,14,21.6 mm10.5,13,19.1 mm0.5 mmsus 316
D002o2-d43.8 mm8.9,13.5,21.4 mm7.9,11.5,18.74 mm0.5 mmsus 316
H002o2-n34 mm11.7,13.9,16 mm10.2,12.9, mm0.5 mmsus 316
H002-2o2-n34 mm11.7,13.9,15.8 mm10.2,12.9 mm0.5 mmsus 316
H002-3o2-n31 mm11.7,13.9,16 mm10.2,12.9 mm0.5 mmsus 316
H002-4o2-n34 mm11.7,13.8 mm15.8 mm0.5 mmsus 316
H004o2-n19.3 mm12.3,13.8,16.5 mm10.8,12.2 mm0.8 mmsus 316
H007-1o2-n34.5 mm13.8,15.9 mm10.3,14.9 mm0.5 mmsus 316
H007-2o2-n38 mm11.3,13.8,15.9 mm10.3,12.8,14.9 mm0.5 mmsus 316
H008o2-n27 mm14.8,16.6 mm12.5 mm0.5 mmsus 316
H009-2o2-n47.05 mm16,19.8 mm15,18.8 mm0.5 mmsus 316
H018o2-n45.5 mm11.3,17.4,19.6 mm10.3,16.4,18.6 mm0.5 mmsus 316
H018-3o2-n45.7 mm11.3,14.6,19.6 mm10.3,13.6,18.6 mm0.5 mmsus 316
K022injector-egt28 mm15 mm14.2 mm0.4 mmsus 316
Showing the first 30 of 57 configurations. The complete list, with drawings and quote codes, is in the sensor housing catalogue.

When 316 or 316L is worth the premium

Choose 316 where the service environment is genuinely corrosive: coolant-side housings, parts exposed to road salt, or applications with a chloride-bearing condensate. 316L is preferred where the part is welded or where a heavy draw would otherwise leave sensitised material behind.

What changes in the press shop

316 is stiffer and work-hardens faster than 304. Expect a slightly lower draw ratio per stage, more frequent anneals on deep parts, and a real difference in springback - the same die that runs 304 will not simply be copied over.

Cost logic

For an exhaust-side or dry housing, 316 costs more and buys nothing. The grade decision should follow the service environment, not the prestige of the stainless grade.

Grade, wall thickness and tolerance are confirmed against the customer drawing. Batch heat treatment, slow wire cutting, passivation, electropolishing, plating, phosphating and coating are placed with qualified external processors and disclosed on the inspection plan.

Frequently asked questions

How many SUS 316 configurations does Balford publish?

The published catalogue contains 57 SUS 316 configurations, each recorded with height, outer diameter, inner diameter and material per catalogue code.

What sizes are available for SUS 316 parts?

Recorded heights run 0.3-58.5 mm and outer diameters 1.2-21.6. Custom sizes are manufactured to the customer drawing rather than limited to the catalogue.

Which materials are used?

The published configurations use SUS 316. Material, temper and wall thickness are confirmed against the drawing before tooling.

What wall thickness is typical?

Recorded wall thicknesses in this family: 0.40, 0.50, 0.60, 0.80 mm.

How do I get a quotation?

Send a 2D drawing or 3D model with the material, annual volume and the tolerances that matter. A DFM review covering draw ratio, forming stages and thinning comes back before tooling, and the quotation separates tooling cost from piece price.

Written by the Balford engineering team, Zhuji, Zhejiang, China. Last updated 21 September 2026.