Material Group 8.3 ISO/TR 15608: Manganese-austenitic stainless steels such as XM-19 with
4 < Mn ≤ 12 % and Ni ≤ 35 %
Characteristics of Manganese-austenitic stainless steels acc. Material Group 8.3 ISO/TR 15608
In this material group 8.3, nickel has been replaced by manganese.
The purpose is to reduce the impact of nickel-price fluctuations on alloy surcharge. These grades also have complementary nitrogen additions, to further stabilise the austenitic phase and provide high-strength properties neccessary in certain applications. Cooper had also been successfully added, to provided austenite stabilisation and improve cold forming properties.
For example the austenitic stainless steel XM-19 has corrosion resistance greater than that provided by Types 316, 316L, plus approximately twice the yield strength at room temperature. In addition, XM-19 Stainless Steel has very good mechanical properties at both elevated and sub-zero temperatures.
Weldability of Manganese-austenitic stainless steels acc. Material Group 8.3 ISO/TR 15608
The weldability is similar to that of Material group 8.1 ISO/TR 15608.
Applications of Manganese-Austenitic Stainless Steels such as alloy XM-19
Components using the combination of excellent corrosion resistance and high strength currently include pumps, valves and fittings, fasteners, pump shafting, heat exchanger and parts.
Table: Typical materials ind ISO/TR 15608 material group
| Name / Grade | Number | Standard | Product | AISI / Trade Mark | Remarks |
|---|---|---|---|---|---|
| X12CrMnNiN17-7-5 X9CrMnNiCu17-8-5-2 TP201 201–1 201–2 TP201 201–1 201–2 | 1.4372 1.4618 S20100 S20100 S20100 S20100 S20100 S20100 | 1.4372 1.4618 S20100 S20100 S20100 S20100 S20100 S20100 | – – Smls. tube Plate Plate Welded tube Plate Plate | – – 201 | – – ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| 201LN | S20153 | ASTM A-240 | Plate | 201LN | ASME BPVC |
| TP202 202 TP202 | S20200 S20200 S20200 | ASTM A-213 ASTM A-240 ASTM A-249 | Smls. tube Plate Welded tube | 202 | ASME BPVC ASME BPVC ASME BPVC |
| – | S20400 | ASTM A-240 | Plate | ASME BPVC | |
| X2CrNiMnMoNNb21-16-5-3 FXM–19 XM–19 XM–19 TP XM–19 TPXM–19 XM–19 WPXM–19 XM–19 TPXM–19 TPXM–19 FXM–19 | 1.3964 S20910 S20910 S20910 S20910 S20910 S20910 S20910 S20910 S20910 S20910 S20910 | ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-479 ASTM A-688 ASTM A-813 ASTM A-814 | – Forging Smls. tube Plate Welded tube Smls. & welded pipe Fusion welded pipe Fitting Bar Welded pipe Cold work. weld. pipe Forging | XM–19 Nitronic® 50 ATI XM-19™ Fermonic 50 NAS XM-19 | – ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| XM–17 XM–17 | S21600 S21600 | ASTM A-240 ASTM A-479 | Plate Bar | XM–17 | ASME BPVC ASME BPVC |
| XM–18 XM–18 | S21603 S21603 | ASTM A-240 ASTM A-479 | Plate Bar | XM–18 | ASME BPVC ASME BPVC |
| FXM–11 TPXM–11 XM–11 XM–11 TPXM–11 TPXM–11 FXM–11 | S21904 S21904 S21904 S21904 S21904 S21904 S21904 | ASTM A-182 ASTM A-312 ASTM A-479 ASTM A-666 ASTM A-813 ASTM A-814 ASTM A-965 | Forging Smls. & welded pipe Bar Plate Welded pipe Cold work. weld. pipe Forging | XM-11 | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| XM–29 TP XM–29 TPXM–29 XM–29 XM–29 XM–29 TPXM–29 TPXM–29 | S24000 S24000 S24000 S24000 S24000 S24000 S24000 S24000 | ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-479 ASTM A-688 ASTM A-813 ASTM A-814 | Plate Welded tube Smls. & welded pipe Fusion welded pipe Bar Welded tube Welded pipe Cold work. weld. pipe | Nitronic® 33 XM–29 | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| X2CrNiMnMoN25-18-6-5 F49 S34565 S34565 S34565 S34565 S34565 S34565 – | 1.4565 S34565 S34565 S34565 S34565 S34565 S34565 S34565 S34565 | EN 10088-2 ASTM A-182 ASTM A-213 ASTM A-240 ASTM A-312 ASTM A-376 ASTM A-403 ASTM A-409 ASTM A-479 | – Forging Smls. tube Plate Smls. & welded pipe Smls. pipe Fitting Welded pipe Bar | – NIROSTA® 3465S | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| CG6MMN | J93790 | ASTM A-351 | Casting | ASME BPVC |